INDUSTRIAL REAL ESTATE LEASE
(MULTI-TENANT FACILITY)
CB COMMERCIAL REAL ESTATE GROUP, INC.
BROKERAGE AND MANAGEMENT
LICENSED REAL ESTATE BROKER


ARTICLE ONE: BASIC TERMS

This Article One contains the  Basic  Terms  of  this  Lease  between  the 
Landlord  and  Tenant  named  below.  Other  Articles, Sections and Paragraphs
of the Lease referred to in this Article One explain and define the Basic Terms
and are to be read in conjunction with the Basic Terms.

     Section 1.01. DATE OF LEASE:  April 10, 1995

     Section 1.02. LANDLORD (INCLUDE LEGAL ENTITY):  3905 Bohannon Partners
Address of Landlord:  2596 Bay Road, Redwood City, CA  94063

     Section 1.03. TENANT (INCLUDE LEGAL ENTITY):  Informix Software, Inc.
Address of Tenant:  4100 Bohannon Drive, Menlo Park, CA  94025

     Section 1.04. PROPERTY: The Property is part of Landlord's multi-tenant
real property development known as 3905 Bohannon Drive, Menlo Park,  CA 94025
and described or depicted in Exhibit "A" (the "Project").  The Project includes
the land, the buildings and all other improvements located on the land, and the
common areas described in Paragraph 4.05(a). The Property is (include street
address, approximate square footage and description) 3905 Bohannon Drive, a
single story, multi-tenant building consisting of approximately 17,038 square
feet and is further described as the space occupied by Informix consisting of
Suites E, C, D, & G consisting of approximately 10,327 square feet.

     Section 1.05. LEASE TERM:  Five (5) years, Zero (0) months beginning on 
June 1, 1995 or such other date as is specified in this Lease, and ending on 
May 31, 2000.

     Section 1.06. PERMITTED USES: (See Article Five):  General office use, 
computer room, and associated uses.

     Section 1.07. TENANT'S GUARANTOR: (If none, so state)  None

     Section 1.08. BROKERS: (See Article Fourteen) (If none, so state)
       Landlord's Broker:     James J. Fletcher, CB Commercial Real Estate
Group, Inc.
       Tenant's  Broker: James J. Fletcher, CB Commercial Real Estate Group,
Inc.

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     Section l.09. COMMISSION PAYABLE TO LANDLORD'S BROKER: (See Article
Fourteen) $ By separate agreement.

     Section 1.10. INITIAL SECURITY DEPOSIT: (See Section 3.03)  $  None

     Section 1.11.VEHICLE PARKING SPACES ALLOCATED TO TENANT: (See Section 4.05)
34 spaces  (3.29/1000).

     Section 1.12.  RENT AND OTHER CHARGES PAYABLE BY TENANT:  
(a) BASE RENT:  See Addendum for Rent Schedule.  Dollars ($________) per month
for the first twelve months, as provided in Section 3.01, and shall be increased
on the first day of the 13th, 25th, 31st, and 49th months(s) after the
Commencement Date, either (i) as provided  in Section 3.02, or
(ii) ______________.  (If (ii) is completed, then (i) and Section 3.02  are 
inapplicable.)

(b)  OTHER  PERIODIC  PAYMENTS:  (i) Real Property Taxes above the "Base Real
Property Taxes" (See Section 4.02);  (ii) Utilities (See Section 4.03); (iii)
Increased Insurance Premiums above the "Base Premiums" (See  Section 4.04); (iv)
Tenant's Initial Pro Rate Share of Common Area Expenses ________% (See Section
4.05); (v) Impounds for Tenant's Share of
Insurance Premiums and Property Taxes (See Section 4.08); (vi) Maintenance,
Repairs and Alterations (See Article Six).

     Section 1.13. COSTS AND CHARGES PAYABLE BY LANDLORD: (a) Base Real Property
Taxes (See Section 4.02); (b) Base Insurance Premiums (See Section 4.04(c)); (c)
Maintenance and Repair (See Article Six).

     Section 1.14. LANDLORD'S SHARE OF PROFIT ON ASSIGNMENT OR SUBLEASE: (See
Section 9.05) Fifty percent (50 %) of the Profit (the "Landlord's Share").

     Section 1.15. RIDERS: The following Riders are attached to and made a part
of this Lease: (If none, so state)  Rent Schedule per Site Plan and Calendar
Schedule -- Addendum Occupancy Schedule per Site Plan -- Addendum Additional
general provisions -- Addendum

     * Lease term subject to successful relocation to Tenant, Tabula
Interactive.


ARTICLE TWO: LEASE TERM

     Section 2.01.  LEASE OF PROPERTY FOR LEASE TERM.  Landlord leases the
Property to Tenant and Tenant leases the Property from Landlord for the Lease
Term. The Lease Term is for the period stated in Section 1.05 above and shall
begin and end on the dates specified in Section 1.05 above, unless the beginning
or end of the Lease Term is changed under any provision of this Lease.  The 

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"Commencement Date" shall be the date specified in Section 1.05 above for the
beginning of the Lease Term, unless advanced or delayed under any provision of
this Lease.

     Section 2.02.  DELAY IN COMMENCEMENT.  Landlord shall not be liable to
Tenant if Landlord does not deliver possession of the Property to Tenant on the
Commencement Date.  Landlord's non-delivery of the Property to Tenant on that
date shall not affect this Lease or the obligations of Tenant under this Lease
except that the Commencement Date shall be delayed until Landlord delivers
possession of the Property to Tenant and the Lease Term shall be extended for a
period equal to the delay in delivery of possession of the Property to Tenant,
plus the number of days necessary to end the Lease Term on the last day of a
month.  If Landlord does not deliver possession of the Property to Tenant within
sixty (60) days after the Commencement Date, Tenant may elect to cancel this
Lease by giving written notice to Landlord within ten (10) days after the sixty
(60) -day period ends.  If Tenant gives such notice, the Lease shall be
cancelled and neither Landlord nor Tenant shall have any further obligations to
the other.  If Tenant does not give such notice, Tenant's right to cancel the
Lease shall expire and the Lease Term shall commence upon the delivery of
possession of the Property to Tenant.  If delivery of possession of the Property
to Tenant is delayed, Landlord and Tenant shall, upon such delivery, execute an
amendment to this Lease setting forth the actual Commencement Date and
expiration date of the Lease.  Failure to execute such amendment shall not
affect the actual Commencement Date and expiration date of the Lease.

     Section 2.03.  EARLY OCCUPANCY.  If Tenant occupies the Property prior to
the Commencement Date, Tenant's occupancy of the Property shall be subject to
all of the provisions of this Lease.  Early occupancy of the Property shall not
advance the expiration date of this Lease.  Tenant shall pay Base Rent and all
other charges specified in this Lease for the early occupancy period.

     Section 2.04.  HOLDING OVER.  Tenant shall vacate the Property upon the 
expiration or earlier termination of this Lease.  Tenant shall reimburse 
Landlord for and indemnity Landlord against all damages which Landlord incurs 
from Tenant's delay in vacating the Property.  If Tenant does not vacate the 
Property upon the expiration or earlier termination of the Lease and Landlord 
thereafter accepts rent from Tenant, Tenant's occupancy of the Property shall 
be a "month-to-month" tenancy, subject to all of the terms of this Lease 
applicable to a month-to-month tenancy, except that the Base Rent then in 
effect shall be increased by twenty-five percent (25%).

ARTICLE THREE: BASE RENT

     Section 3.01. TIME AND MANNER OF PAYMENT.  Upon execution of this Lease,
Tenant shall pay Landlord the Base Rent in the amount stated in Paragraph 1. 12
(a) above for the first month of the Lease Term.  On the first day of the second
month of the Lease Term and each month thereafter, Tenant shall pay Landlord the
Base Rent, in advance, without offset, deduction or prior demand.  The Base Rent
shall be payable at Landlord's address or at such other place as Landlord may
designate in writing.

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     Section 3.02.  COST OF LIVING INCREASES.  The Base Rent shall be increased
on each date (the "Rental Adjustment Date") stated in Paragraph 1.12(a) above in
accordance with the increase in the United States Department of Labor, Bureau of
Labor Statistics, Consumer Price Index for All Urban Consumers (all items for
the geographical Statistical Area in which the Property is located on the basis
of 1982-1984 = 100) (the "Index") as follows:

     (a) The Base Rent (the "Comparison Base Rent") in effect immediately 
before each Rental Adjustment Date shall be increased by the percentage that 
the Index has increased from the date (the "Comparison Date") on which 
payment of the Comparison Base Rent began through the month in which the 
applicable Rental Adjustment Date occurs.  The Base Rent shall not be reduced 
by reason of such computation.  Landlord shall notify Tenant of each increase 
by a written statement which shall include the Index for the applicable 
Comparison Date, the Index for the applicable Rental Adjustment Date, the 
percentage increase between those two Indices, and the new Base Rent.  Any 
increase in the Base Rent provided for in this Section 3.02 shall be subject 
to any minimum or maximum increase, if provided for in Paragraph 1.12 (a).

     (b) Tenant shall pay the new Base Rent from the applicable Rental 
Adjustment Date until the next Rental Adjustment Date.  Landlord's notice may 
be given after the applicable Rental Adjustment Date of the increase, and 
Tenant shall pay Landlord the accrued rental adjustment for the months 
elapsed between the effective date of the increase and Landlord's notice of 
such increase within ten (10) days after Landlord's notice.  If the format or 
components of the Index are materially changed after the Commencement Date, 
Landlord shall substitute an index which is published by the Bureau of Labor 
Statistics or similar agency and which is most nearly equivalent to the Index 
in effect on the Commencement Date. The substitute index shall be used to 
calculate the increase in the Base Rent unless Tenant objects to such index 
in writing within fifteen (15) days after receipt of Landlord's notice.  If 
Tenant objects, Landlord and Tenant shall submit the selection of the 
substitute index for binding arbitration in accordance with the rules and 
regulations of the American Arbitration Association at its office closest to 
the Property.  The costs of arbitration shall be borne equally by Landlord 
and Tenant.

     Section 3.04. [deleted]

ARTICLE FOUR: OTHER CHARGES PAYABLE BY TENANT

     Section 4.01. ADDITIONAL RENT. All charges payable by Tenant other than
Base Rent are called "Additional Rent."  Unless this Lease provides otherwise,
Tenant shall pay all Additional Rent then due with the next monthly installment
of Base Rent.  The term "rent" shall mean Base Rent and Additional Rent.

     Section 4.02. PROPERTY TAXES.

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     (a)  REAL PROPERTY TAXES.  Landlord shall pay the "Base Real Property
Taxes" on the Property during the Lease Term.  Base Real Property Taxes are real
property taxes applicable to the Property as shown on the tax bill for the most
recent tax fiscal year ending prior to the Commencement Date.  However, if the
structures on the Property are not completed by the tax lien date of such tax
fiscal year, the Base Real Property Taxes are the taxes shown on the first tax
bill showing the full assessed value of the Property after completion of the
structures.  Tenant shall pay Landlord the amount, if any, by which the real
property taxes during the Lease Term exceed the Base Real Property Taxes. 
Subject to Paragraph 4.02(c), Tenant shall make such payments within fifteen
(I5) days after receipt of Landlord's statement showing the amount and
computation of such increase. Landlord shall reimburse Tenant for any real
property taxes paid by Tenant covering any period of time prior to or after the
Lease Term.

     (b) DEFINITION OF REAL PROPERTY TAX. "Real property tax" means: (i) any
fee, license fee, license tax, business license fee, commercial rental tax,
levy, charge, assessment, penalty or tax imposed by any taxing authority against
the Property; (ii) any tax on the Landlord's right to receive, or the receipt
of, rent or income from the Property or against Landlord's business of leasing
the Property; (iii) any tax or charge for fire protection, streets, sidewalks,
road maintenance, refuse or other services provided to the Property by any
governmental agency; (iv) any tax imposed upon this transaction or based upon a
re-assessment of the Property due to a change of ownership, as defined by
applicable law, or other transfer of all or part of Landlord's interest in the
Property; and (v) any charge or fee replacing any tax previously included within
the definition of real property tax.  "Real properly tax" does not, however,
include Landlord's federal or state income, franchise, inheritance or estate
taxes.

     (c) JOINT ASSESSMENT.  If the Property is not separately assessed, Landlord
shall reasonably determine Tenant's share of the real property tax payable by
Tenant under Paragraph 4.02 (a) from the assessor's worksheets or other
reasonably available information.  Tenant shall pay such share to Landlord
within fifteen (15) days after receipt of Landlord's written statement.

     (d) PERSONAL PROPERTY TAXES.

          (i) Tenant shall pay all taxes charged against trade fixtures,
furnishings, equipment or any other personal property belonging to Tenant. 
Tenant shall try to have personal property taxed separately from the Property.

          (ii) If any of Tenant's personal property is taxed with the Property,
Tenant shall pay Landlord the taxes for the personal property within fifteen
(15) days after Tenant receives a written statement from Landlord for such
personal property taxes.

     Section 4.03. UTILITIES.  Tenant shall pay, directly to the appropriate
supplier, the cost of all natural gas, heat, light, power, sewer service,
telephone, water, refuse disposal and other utilities and services supplied to
the Property.  However, if any services or utilities are jointly metered with
other 

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property, Landlord shall make a reasonable determination of Tenant's
proportionate share of the cost of such utilities and services and Tenant shall
pay such share to Landlord within fifteen (15) days after receipt of Landlord's
written statement.

     Section 4.04. INSURANCE POLICIES. 

     (a) LIABILITY INSURANCE. During the Lease Term, Tenant shall maintain a
policy of commercial general liability insurance (sometimes known as broad form
comprehensive general liability insurance) insuring Tenant against liability for
bodily injury, property damage (including loss of use of property) and personal
injury arising out of the operation, use or occupancy of the Property.  Tenant
shall name Landlord as an additional insured under such policy.  The initial
amount of such insurance shall be One Million Dollars ($1,000,000) per
occurrence and shall be subject to periodic increase based upon inflation,
increased liability awards, recommendation of Landlord's professional insurance
advisers and other relevant factors.  The liability insurance obtained by Tenant
under this Paragraph 4.04(a) shall (i) be primary and non-contributing and (ii)
contain cross-liability endorsements. [deleted and initialed]  The amount and
coverage of such insurance shall not limit Tenant's liability nor relieve Tenant
of any other obligation under this Lease.  Landlord may also obtain
comprehensive public liability insurance in an amount and with coverage
determined by Landlord insuring Landlord against liability arising out of
ownership, operation, use or occupancy of the Property.  The policy obtained by
Landlord shall not be contributory and shall not provide primary insurance.

     (b) PROPERTY AND RENTAL INCOME INSURANCE.  During the Lease Term, 
Landlord shall maintain policies of insurance covering loss of or damage to 
the Property in the full amount of its replacement value.  Such policy shall 
contain an Inflation Guard Endorsement and shall provide protection against 
all perils included within the classification of fire, extended coverage, 
vandalism, malicious mischief, special extended perils (all risk), sprinkler 
leakage and any other perils which Landlord deems reasonably necessary.  
Landlord shall have the right to obtain flood and earthquake insurance if 
required by any lender holding a security interest in the Property.  Landlord 
shall not obtain insurance for Tenant's fixtures or equipment or building 
improvements installed by Tenant on the Property.  During the Lease Term, 
Landlord shall also maintain a rental income insurance policy, with loss 
payable to Landlord, in an amount equal to one year's Base Rent, plus 
estimated real property taxes and insurance premiums. Tenant shall be liable 
for the payment of any deductible amount under Landlord's or Tenant's 
insurance policies maintained pursuant to this Section 4.04, in an amount not 
to exceed Ten Thousand Dollars ($10,000).  Tenant shall not do or permit 
anything to be done which invalidates any such insurance policies.

     (c) PAYMENT OF PREMIUMS.

          (i) Landlord shall pay the "Base Premiums" for the insurance policies
maintained by Landlord under Paragraph 4.04(b). If the Property has been
previously fully occupied, the "Base Premiums" are the insurance premiums paid
during or applicable to the last twelve (12) months of 

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such prior occupancy.  If the Property has not been previously fully occupied or
has been occupied for less than twelve (12) months, the Base Premiums are the
lowest annual premiums reasonably obtainable for the required insurance for the
Property as of the Commencement Date.

          (ii) Tenant shall pay Landlord the amount, if any, by which the
insurance premiums for all policies maintained by Landlord under Paragraph
4.04(b) have increased over the Base Premiums, whether such increases result
from the nature of Tenant's occupancy, any act or omission of Tenant, the
requirement of any lender referred to in Article Eleven (Protection of Lenders),
the increased value of the Property or general rate increases.  However, if
Landlord substantially increases the amount of insurance carried or the
percentage of insured value after the period during which the Base Premiums were
calculated, Tenant shall only pay Landlord the amount of increased premiums
which would have been charged by the insurance carrier if the amount of
insurance or percentage of insured value had not been substantially increased by
Landlord.  This adjustment in the amount due from Tenant shall be made only once
during the Lease Term.  Thereafter, Tenant shall be obligated to pay the full
amount of any additional increases in the insurance premiums, including
increases resulting from any further increases in the amount of insurance or
percentage of insured value.  Subject to Section 4.05, Tenant shall pay Landlord
the increases over the Base Premiums within fifteen (15) days after receipt by
Tenant of a copy of the premium statement or other evidence of the amount due. 
If the insurance policies maintained by Landlord cover improvements or real
property other than the Property, Landlord shall also deliver to Tenant a
statement of the amount of the premiums applicable to the Property showing, in
reasonable detail, how such amount was computed.  If the Lease Term expires
before the expiration of the insurance period, Tenant's liability shall be pro
rated on an annual basis.

     (d) GENERAL INSURANCE PROVISIONS.

          (i) Any insurance which Tenant is required to maintain under this
Lease shall include a provision which requires the insurance carrier to give
Landlord not less than thirty (30) days' written notice prior to any
cancellation or modification of such coverage.

          (ii) If Tenant fails to deliver any policy, certificate or renewal to
Landlord required under this Lease within the prescribed time period or if any
such policy is cancelled or modified during the Lease Term without Landlord's
consent, Landlord may obtain such insurance, in which case Tenant shall
reimburse Landlord for the cost of such insurance within fifteen (15) days after
receipt of a statement that indicates the cost of such insurance.

          (iii) Tenant shall maintain all insurance required under this Lease
with companies holding a "General Policy Rating" of A-12 or better, as set forth
in the most current issue of "Best Key Rating Guide".  Landlord and Tenant
acknowledge the insurance markets are rapidly changing and that insurance in the
form and amounts described in this Section 4.04 may not be available in the
future.  Tenant acknowledges that the insurance described in this Section 4.04
is for the primary benefit of Landlord.  If at any time during the Lease Term,
Tenant is unable to maintain the insurance 

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required under the Lease, Tenant shall nevertheless maintain insurance coverage
which is customary and commercially reasonable in the insurance industry for
Tenant's type of business, as that coverage may change from time to time. 
Landlord makes no representation as to the adequacy of such insurance to protect
Landlord's or Tenant's interests.  Therefore, Tenant shall obtain any such
additional property or liability insurance which Tenant deems necessary to
protect Landlord and Tenant.

          (iv) [deleted and initialled]  Landlord and Tenant each hereby waive
any and all rights of recovery against the other, or against the officers,
employees, agents or representatives of the other, for loss of or damage to its
property or the property of others under its control, if such loss or damage is
covered by any insurance policy in force (whether or not described in this
Lease) or required to be covered hereunder [initialled] at the time of such loss
or damage.  Upon obtaining the required policies of insurance, Landlord and
Tenant shall give notice to the insurance carriers of this  mutual waiver of
subrogation.

     Section 4.05.  COMMON AREAS; USE, MAINTENANCE AND COSTS.    

     (a) Common Areas.   As used in this Lease, "Common Areas" shall mean all
areas within the Project which are available for the common use of tenants of
the Project and which are not leased or held for the exclusive use of Tenant or
other tenants, including, but not limited to, parking areas, driveways,
sidewalks, loading areas, access roads, corridors, landscaping and planted
areas.  Landlord, from time to time, may change the size, location, nature and
use of any of the Common Areas, convert Common Areas into leasable areas,
construct additional parking facilities (including parking structures) in the
Common Areas, and increase or decrease Common Area land and/or facilities. 
Tenant acknowledges that such activities may result in inconvenience to Tenant. 
Such activities and changes are permitted if they do not materially affect
Tenant's use of the Property.

     (b)  USE OF COMMON AREAS.  Tenant shall have the nonexclusive right (in
common with other tenants and all others to whom Landlord has granted or may
grant such rights) to use the Common Areas for the purposes intended, subject to
such reasonable rules and regulations as Landlord may establish from time to
time.  Tenant shall abide by such rules and regulations
and shall use its best effort to cause others who use the Common Areas with
Tenant's express or implied permission to abide by Landlord's rules and
regulations.  At any time, Landlord may close any Common Areas to perform any
acts in the Common Areas as, in Landlord's judgment, are desirable to improve
the Project.  Tenant shall not interfere with the rights of Landlord, other
tenants or any other person entitled to use the Common Areas.

     (c) SPECIFIC PROVISION RE: VEHICLE PARKING.   Tenant shall be entitled to
use the number of vehicle parking spaces in the Project allocated to Tenant in
Section 1.11 of the Lease without paying any additional rent.  Tenant's parking
shall not be reserved and shall be limited to vehicles no larger than standard
size automobiles or pickup utility vehicles.  Tenant shall not cause large
trucks or other large vehicles to be parked within the Project or on the
adjacent public streets.  Temporary parking 

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of large delivery vehicles in the Project may be permitted by the rules and
regulations established by Landlord.  Vehicles shall be parked only in striped
parking spaces and not in driveways, loading areas or other locations not
specifically designated for parking.  Handicapped spaces shall only be used by
those legally permitted to use them.  If Tenant parks more vehicles in the
parking area than the number set forth in Section 1.11 of this Lease, such
conduct shall be a material breach of this Lease.  In addition to Landlord's
other remedies under the Lease, Tenant shall pay a daily charge determined by
Landlord for each such additional vehicle.

     (d) MAINTENANCE OF COMMON AREAS.  Landlord shall maintain the Common 
Areas in good order, condition and repair and shall operate the Project, in 
Landlord's sole discretion, as a first-class industrial/commercial real 
property development.  Tenant shall pay Tenant's pro rata share (as 
determined below) of all costs incurred by Landlord for the operation and 
maintenance of the Common Areas.  Common Area costs include, but are not 
limited to, costs and expenses for the following: gardening and landscaping; 
utilities, water and sewage charges; maintenance of signs (other than 
tenants' signs); premiums for liability, property damage, fire and other 
types of casualty insurance on the Common Areas and worker's compensation 
insurance; all property taxes and assessments levied on or attributable to 
the Common Areas and all Common Area improvements; all personal property 
taxes levied on or attributable to personal property used in connection with 
the Common Areas; straight-line depreciation on personal property owned by 
Landlord which is consumed in the operation or maintenance of the Common 
Areas; rental or lease payments paid by Landlord for rented or leased 
personal property used in the operation or maintenance of  the Common Areas; 
fees for required licenses and permits; repairing, resurfacing, repaving, 
maintaining, painting, fighting, cleaning, refuse removal, security and 
similar items; reserves for roof replacement and exterior painting and other 
appropriate reserves; and a reasonable allowance to Landlord for Landlord's 
supervision of the Common Areas (not to exceed five percent (5%) of the gross 
rents of the Project for the calendar year).  Landlord may cause any or all 
of such services to be provided by third parties and the cost of such 
services shall be included in Common Area costs.  Common Area costs shall not 
include depreciation of real property which forms part of the Common Areas.

     (e) TENANT'S SHARE AND PAYMENT.  Tenant shall pay Tenant's annual pro rata
share of all Common Area costs (prorated for any fractional month) upon written
notice from Landlord that such costs are due and payable, and in any event prior
to delinquency.  Tenant's pro rata share shall be calculated by dividing the
square foot area of the Property, as set forth in Section 1.04 of the Lease, by
the aggregate square foot area of the Project which is leased or held for lease
by tenants, as of the date on which the computation is made.  Tenant's initial
pro rata share is set out in Paragraph 1.12(b).  Any changes in the Common Area
costs and/or the aggregate area of the Project leased or held for lease during
the Lease Term shall be effective on the first day of the month after such
change occurs.  Landlord may, at Landlord's election, estimate in advance and
charge to Tenant as Common Area costs, all real property taxes for which Tenant
is liable under Section 4.02 of the Lease, all insurance premiums for which
Tenant is liable under Section 4.04 of the Lease, all maintenance and repair
costs for which Tenant is liable under Section 6.04 of the Lease, and all other
Common Area costs payable by Tenant hereunder.  At Landlord's election, such
statements of 

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estimated Common Area costs shall be delivered monthly, quarterly or at any
other periodic Intervals to be designated by Landlord.  Landlord may adjust such
estimates at any time based upon Landlord's experience and reasonable
anticipation of costs.  Such adjustments shall be effective as of the next rent
payment date after notice to Tenant.  Within sixty (60) days after the end of
each calendar year of the Lease Term, Landlord shall deliver to Tenant a
statement prepared in accordance with generally accepted accounting principles
setting forth, In reasonable detail, the Common Area costs paid or incurred by
Landlord during the preceding calendar year and Tenant's pro rata share.  Upon
receipt of such statement, there shall be an adjustment between Landlord and
Tenant, with payment to or credit given by Landlord (as the case may be) so that
Landlord shall receive the entire amount of Tenant's share of such costs and
expenses for such period.     

     Section 4.06.  LATE CHARGES.   Tenant's failure to pay rent promptly may
cause Landlord to incur unanticipated costs.  The exact amount of such costs are
impractical or extremely difficult to ascertain.  Such costs may include, but
are not limited to, processing and accounting charges and late charges which may
be imposed on Landlord by any ground lease, mortgage or trust deed  encumbering
the Property.  Therefore, if Landlord does not receive any rent payment within
ten (10)  days after it becomes due, Tenant shall pay Landlord a late charge
equal to 6% of the overdue amount.  The parties agree that such late charge
represents a fair and reasonable estimate of the costs Landlord will incur by
reason of such late payment.

     Section 4.07.  INTEREST ON PAST DUE 0BLIGATIONS.  Any amount owed by Tenant
to Landlord which is not paid when due shall bear interest at the rate of
fifteen percent (15%) per annum from the due date of such amount.  However,
interest shall not be payable on late charges to be paid by Tenant under this
Lease.  The payment of interest on such amounts shall not excuse or cure any
default by Tenant under this Lease.  If the interest rate specified in this
Lease is higher than the rate permitted by law, the interest rate is hereby
decreased to the maximum legal interest rate permitted by law.

     Section 4.08. IMPOUNDS FOR INSURANCE PREMIUMS AND REAL PROPERTY TAXES.  If
requested by any ground lessor or lender to whom Landlord has granted a security
interest in the Property, or if Tenant is more than ten (10) days late in the
payment of rent more than once in any consecutive twelve (12) month period,
Tenant shall pay Landlord a sum equal to one-twelfth (1/12) of the annual real
property taxes and insurance premiums payable by Tenant under this Lease,
together with each payment of Base Rent.  Landlord shall hold such payments in a
non-interest bearing impound account.  If unknown, Landlord shall reasonably
estimate the amount of real property taxes and insurance premiums when due. 
Tenant shall pay any deficiency of funds in the impound account to Landlord upon
written request.  If Tenant defaults under this Lease, Landlord may apply any
funds in the impound account to any obligation then due under this Lease.

ARTICLE FIVE:  USE OF PROPERTY

     Section 5.01.  PERMITTED USES.  Tenant may use the Property only for the
Permitted Uses set forth in Section l.06 above.

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     Section 5.02. MANNER OF USE.  Tenant shall not cause or permit the Property
to be used in any way which constitutes a violation of any law, ordinance, or
governmental regulation or order, which annoys or interferes with the rights of
tenants of the Project, or which constitutes a nuisance or waste.  Tenant shall
obtain and pay for all permits, including a Certificate of Occupancy, required
for Tenant's occupancy of the Property and shall promptly take all actions
necessary to comply with all applicable statutes, ordinances, rules,
regulations, orders and requirements regulating the use by Tenant of the
Property, including the Occupational Safety and Health Act.

     Section 5.03. HAZARDOUS MATERIALS.  As used in this Lease, the term
"Hazardous Material" means any flammable items, explosives, radioactive
materials, hazardous or toxic substances, material or waste or related
materials, including any substances defined as or included in the definition of
"hazardous substances", "hazardous wastes", "hazardous materials" or "toxic
substances" now or subsequently regulated under any applicable federal, state or
local laws or regulations, including without limitation petroleum-based
products, paints, solvents, lead, cyanide, DDT, printing inks, acids,
pesticides, ammonia compounds and other chemical products, asbestos, PCBs and
similar compounds, and including any different products and materials which are
subsequently found to have adverse effects on the environment or the health and
safety of persons.  Tenant shall not cause or permit any Hazardous Material to
be generated, produced, brought upon, used, stored, treated or disposed of in or
about the Property by Tenant, its agents, employees, contractors, sublessees or
invitees without the prior written consent of Landlord.  Landlord shall be
entitled to take into account such other factors or facts as Landlord may
reasonably determine to be relevant in determining whether to grant or withhold
consent to Tenant's proposed activity with respect to Hazardous Material.  In no
event, however, shall Landlord be required to consent to the installation or use
of any storage tanks on the Property.  * See Section III of Addendum to Lease
for additional terms and conditions.  

     Section 5.04. SIGNS AND AUCTIONS.  Tenant shall not place any signs on the
Property without Landlord's prior written consent.  Tenant shall not conduct or
permit any auctions or sheriff's sales at the Property.

     Section 5.05. INDEMNITY.  Tenant shall indemnify Landlord against and hold
Landlord harmless from any and all costs, claims or liability arising from: (a)
Tenant's use of the Property; (b) the conduct of Tenant's business or anything
else done or permitted by Tenant to be done in or about the Property, including
any contamination of the Property or any other property resulting from the
presence or use of Hazardous Material caused or permitted by Tenant; (c) any
breach or default in the performance of Tenant's obligations under this Lease;
(d) any misrepresentation or breach of warranty by Tenant under this Lease; or
(e) other negligent acts or omissions of Tenant.  Tenant shall defend Landlord
against any such cost, claim or lability at Tenant's expense with counsel
reasonably acceptable to Landlord and will be given the choice of 3 firms.  As a
material part of the consideration to Landlord, Tenant assumes all risk of
damage to property or injury to persons in or about the Property arising from
any cause, and Tenant hereby waives all claims in respect thereof against
Landlord, except for any claim arising out of the Landlord's gross negligence or
willful 

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                                                                             12

misconduct .  As used in this Section, the term "Tenant" shall include Tenant's
employees, agents, contractors and invitees, if applicable.

     Section 5.06  LANDLORD'S ACCESS.  Landlord or its agents may enter the
Property at all reasonable times to show the Property to potential buyers,
investors or tenants or other parties; to do any other act or to inspect and
conduct tests in order to monitor Tenant's compliance with all applicable
enrivonmental laws and all laws governing the presence and use of Hazardous
Material; or for any other purpose Landlord deems necessary.  Landlord shall
give Tenant prior notice of such entry, 24 hours, except in the case of an
emergency.  Landlord may place customary "For Sale: or "For Lease" signs on the
Property.   

     Section 5.07. QUIET POSSESSION.  If Tenant pays the rent and complies with
all other terms of this Lease, Tenant may occupy and enjoy the Property for the
full Lease Term, subject to the provisions of this Lease.

ARTICLE SIX:  CONDITION OF PROPERTY, MAINTENANCE, REPAIRS AND ALTERATIONS

     Section 6.01.  EXISTING CONDITIONS.  Tenant accepts the Property in its
condition as of the execution of the Lease, subject to all recorded matters,
laws, ordinances, and governmental regulations and orders.  Except as provided
herein, Tenant acknowledges that neither Landlord nor any agent of Landlord has
made any representation as to the condition of the Property or the suitability
of the Property for Tenant's intended use.  Tenant represents and warrants that
Tenant has made its own inspection of and inquiry regarding the condition of the
Property and is not relying on any representations of Landlord or any Broker
with respect thereto.  If Landlord or Landlord's Broker has provided a Property
Information Sheet or other Disclosure Statement regarding the Property, a copy
is attached as an exhibit to the Lease.

     Section 6.02.  EXEMPTION OF LANDLORD FROM LIABILITY.  Landlord shall not be
liable for any damage or injury to the person, business (or any loss of income
therefrom), goods, wares, merchandise or other property of Tenant, Tenant's
employees, invitees, customers or any other person in or about the Property,
whether such damage or injury is caused by or results from: (a) fire, steam,
electricity, water, gas or rain; (b) the breakage, leakage, obstruction or other
defects of pipes, sprinklers, wires, appliances, plumbing, air conditioning or
lighting fixtures or any other cause; (c) conditions arising in or about the
Property or upon other portions of the Project, or from other sources or places;
or (d) any act or omission of any other tenant of the Project.  Landlord shall
not be liable for any such damage or injury even though the cause of or the
means of repairing such damage or injury are not accessible to Tenant.  The
provisions of this Section 6.02 shall not, however, exempt Landlord from
liability for Landlord's gross negligence or willful misconduct.

     Section 6.03.  LANDLORD'S OBLIGATIONS.  Subject to the provisions of
Article Seven (Damage or Destruction) and Article Eight (Condemnation), and
except for damage caused by any act or 

<PAGE>

                                                                             13

omission of Tenant, or Tenant's employees, agents, contractors or invitees,
Landlord shall keep the foundation, roof and structural portions of the
improvements on the Property in good order, condition and repair.  However,
Landlord shall not be obligated to maintain or repair windows, doors, plate
glass or the surfaces of walls.  Landlord shall not be obligated to make any
repairs under this Section 6.03 until a reasonable time after receipt of a
written notice from Tenant of the need for such repairs.  Tenant waives the
benefit of any present or future law which might give Tenant the right to repair
the Property at Landlord's expense or to terminate the Lease because of the
condition of the Property.

     Section 6.04.  TENANT'S OBLIGATIONS.               

     (a) Except as provided in Section 6.03, Article Seven (Damage or
Destruction) and Article Eight (Condemnation), Tenant shall keep all portions of
the Property (including nonstructural, interior, systems and equipment) in good
order, condition and repair (including interior repainting and refinishing, as
needed).  If any portion of the Property or any system or equipment in the
Property which Tenant is obligated to repair cannot be-fully repaired or
restored, Tenant shall promptly replace such portion of the Property or system
or equipment in the Property, regardless of whether the benefit of such
replacement extends beyond the Lease Term; but if the benefit or useful life of
such replacement extends beyond the Lease Term (as such term may be extended by
exercise of any options), the useful life of such replacement shall be prorated
over the remaining portion of the Lease Term (as extended), and Tenant shall be
liable only for that portion of the cost which is applicable to the Lease Term
(as extended) and Landlord shall be responsible for the remainder.  This is not
applicable to any improvements made by Tenant.  Tenant shall maintain a
preventive maintenance contract providing for the regular inspection and
maintenance of the heating and air conditioning system by a licensed heating and
air conditioning contractor.  Landlord shall have the right, upon written notice
to Tenant, to undertake the responsibility for preventive maintenance of the
heating and air conditioning system at Tenant's expense.  In addition, Tenant
shall, at Tenant's expense, repair any damage to the roof, foundation or
structural portions of walls caused by Tenant's acts or omissions.  It is the
intention of Landlord and Tenant that, at all times during the Lease Term,
Tenant shall maintain the Property in an attractive, first-class and fully
operative condition.

     (b) Tenant shall fulfill all of Tenant's obligations under this Section
6.04 at Tenant's sole expense.  If Tenant fails to maintain, repair or replace
the Property as required by this Section 6.04, Landlord may, upon ten (10) days'
prior notice to Tenant (except that no notice shall be required in the case of
an emergency), enter the Property and perform such maintenance or repair
(including replacement, as needed) on behalf of Tenant.  In such case, Tenant
shall reimburse Landlord for all costs incurred in performing such maintenance
or repair immediately upon demand.

     Section 6.05.  ALTERNATIONS, ADDITIONS, AND IMPROVEMENTS.

     (a) Tenant shall not make any alterations, additions, or improvements to
the Property without Landlord's prior written consent, not to be unreasonably
withheld, except for non-structural 

<PAGE>

                                                                             14

alterations which do not exceed Ten Thousand Dollars ($10,000) in cost
cumulatively over the Lease Term and which are not visible from the outside of
any building of which the Property is part.  Landlord may require Tenant to
provide demolition and/or lien and completion bonds in form and amount
satisfactory to Landlord.  Tenant shall promptly remove any alterations,
additions, or improvements constructed in violation of this Paragraph 6.05(a)
upon Landlord's written request.  All alterations, additions, and improvements
shall be done in a good and workmanlike manner, in conformity with all
applicable laws and regulations, and by a contractor approved by Landlord.  Upon
completion of any such work, Tenant shall provide Landlord with "as built"
plans, copies of all construction contracts, and proof of payment for all labor
and materials.

     (b) Tenant shall pay when due all claims for labor and material furnished
to the Property.  Tenant shall give Landlord at least twenty (20) days' prior
written notice of the commencement of any work on the Property, regardless of
whether Landlord's consent to such work is required.  Landlord may elect to
record and post notices of non-responsibility on the Property.

     Section 6.06.  CONDITION UPON TERMINATION.  Upon the termination of the 
Lease, Tenant shall surrender the Property to Landlord, broom clean and in 
the same condition as received except for ordinary wear and tear which Tenant 
was not otherwise obligated to remedy under any provision of this Lease.  
However, Tenant shall not be  obligated to repair any damage which Landlord 
is required to repair under Article Seven (Damage or Destruction).  In 
addition, Landlord may require Tenant to remove any alterations, additions or 
improvements (whether or not made with Landlord's consent) prior to the 
expiration of the Lease and to restore the Property to its prior condition, 
all at Tenant's expense.  All alterations, additions and improvements which 
Landlord has not required Tenant to remove shall become Landlord's property 
and shall be surrendered to Landlord upon the expiration or earlier 
termination of the Lease, except that Tenant may remove any of Tenant's 
machinery or equipment which can be removed without material damage to the 
Property.  Tenant shall repair, at Tenant's expense, any damage to the 
Property caused by the removal of any such machinery or equipment. In no 
event, however, shall Tenant remove any of the following materials or 
equipment (which shall be deemed Landlord's property) without Landlord's 
prior written consent: any power wiring or power panels; lighting or lighting 
fixtures; wall coverings; drapes, blinds or other window coverings; carpets 
or other floor coverings; heaters, air conditioners or any other heating or 
air conditioning equipment; fencing or security gates; or other similar 
building operating equipment and decorations.  *See Section III of Addendum 
to Lease for additional terms and conditions.

ARTICLE SEVEN: DAMAGE OR DESTRUCTION

     Section 7.01.  PARTIAL DAMAGE TO PROPERTY.

     (a) Tenant shall notify Landlord in writing immediately upon the occurrence
of any damage to the Property.  If the Property is only partially damaged (i.e.,
less than fifty percent (50%) of the Property is untenantable as a result of
such damage or less than fifty percent (50%) of Tenant's 

<PAGE>

                                                                             15

operations are materially impaired) and if the proceeds received by Landlord
from the insurance policies described in Paragraph 4.04(b) are sufficient to pay
for the necessary repairs, this Lease shall remain in effect and Landlord shall
repair the damage as soon as reasonably possible.  Landlord may elect (but is
not required) to repair any damage to Tenant's fixtures, equipment, or
improvements.

     (b) If the insurance proceeds received by Landlord re not sufficient to pay
the entire cost of repair, or if the cause of the damage is not covered by the
insurance policies which Landlord maintains under Paragraph 4.04(b), Landlord
may elect either to (i) repair the damage as soon as reasonably possible, in
which case this Lease shall remain in full force and effect, or 9ii) terminate
this Lease as of the date the damage occurred.  Landlord shall notify Tenant
within thirty (30) days after receipt of notice of the occurrence of the damage
whether Landlord elects to repair the damage or terminate the Lease.  If
Landlord elects to repair the damage, Tenant shall pay Landlord the "deductive
amount" (if any) under Landlord's insurance policies and, if the damage was due
to an act or omission of Tenant, or Tenant's employees, agents, contractors or
invitees, the difference between the actual cost of repair and any insurance
proceeds received by Landlord.  If Landlord elects to terminate the Lease,
Tenant may elect to continue this Lease in full force and effect, in which case
Tenant shall repair any damage to the Property and any building in which the
Property is located.  Tenant shall pay the cost of such repairs, except that
upon satisfactory completion of such repairs, Landlord shall deliver to Tenant
any insurance proceeds received by Landlord for the damage repaired by Tenant. 
Tenant shall give Landlord written notice of such election within ten (10) days
after receiving Landlord's termination notice.

     (c) if the damage to the Property occurs during the last six (6) months of
the Lease Term and such damage will require more than thirty (30) days to
repair, either Landlord or Tenant may elect to terminate this Lease as of the
date the damage occurred, regardless of the sufficiency of any insurance
proceeds.  *See Section III of Addendum to Lease for additional terms and
conditions.  The party electing to terminate this Lease shall give written
notification to the other party of such election within thirty (30) days after
Tenant's notice to Landlord of the occurrence of the damage.

     Section 7.02.  SUBSTANTIAL OR TOTAL DESTRUCTION.  If the Property is
substantially or totally destroyed by any cause whatsoever (i.e., the damage to
the Property is greater than partial damage as described in Section 7.01), and
regardless of whether Landlord receives any insurance proceeds, this Lease shall
terminate as of the date the destruction occurred.  Notwithstanding the
preceding sentence, if the Property can be rebuilt within six (6) months after
the date of destruction, Landlord may elect to rebuild the Property at
Landlord's own expense, in which case this Lease shall remain in full force and
effect.  Landlord shall notify Tenant of such election within thirty (30) days
after Tenant's notice of the occurrence of total or substantial destruction.  If
Landlord so elects, Landlord shall rebuild the Property at Landlord's sole
expense, except that if the destruction was caused by an act or omission of
Tenant, Tenant shall pay Landlord the difference between the actual cost of
rebuilding and any insurance proceeds received by Landlord.

<PAGE>

                                                                             16

     Section 7.03.  TEMPORARY REDUCTION OF RENT.  If the Property is destroyed
or damaged and Landlord or Tenant repairs or restores the Property pursuant to
the provisions of this Article Seven, any rent payable during the period of such
damage, repair and/or restoration shall be reduced according to the degree, if
any, to which Tenant's use of the Property is impaired.  However, the reduction
shall not exceed the sum of one year's payment of Base Rent, insurance premiums
and real property taxes.  Except for such possible reduction in Base Rent,
insurance premiums and real property taxes, Tenant shall not be entitled to any
compensation, reduction, or reimbursement from Landlord as a result of any
damage, destruction, repair, or restoration of or to the Property.

     Section 7.04.  WAIVER.  Tenant waives the protection of any statute, code
or judicial decision which grants a tenant the right to terminate a lease in the
event of the substantial or total destruction of the leased property.  Tenant
agrees that the provisions of Section 7.02 above shall govern the rights and
obligations of Landlord and Tenant in the event of any substantial or total
destruction to the Property.

ARTICLE EIGHT:  CONDEMNATION

     If all or any portion of the Property is taken under the power of 
eminent domain or sold under the threat of that power (all of which are 
called "Condemnation"), this Lease shall terminate as to the part taken or 
sold on the date the condemning authority takes title or possession, 
whichever occurs first. If more than twenty percent (20%) of the floor area 
of the building in which the Property is located, or which is located on the 
Property, is taken, either Landlord or Tenant may terminate this Lease as of 
the date the condemning authority takes title or possession, by delivering 
written notice to the other within ten (10) days after receipt of written 
notice of such taking (or in the absence of such notice, within ten (10) days 
after the condemning authority takes title or possession).  If neither 
Landlord nor Tenant terminates this Lease, this Lease shall remain in effect 
as to the portion of the Property not taken, except that the Base Rent and 
Additional Rent shall be reduced in proportion to the reduction in the floor 
area of the Property.  Any Condemnation award or payment shall be distributed 
in the following order: (a) first, to any ground lessor, mortgagee or 
beneficiary under a deed of trust encumbering the Property, the amount of its 
interest in the Property; (b) second, to Tenant, only the amount of any award 
specifically designated for loss of or damage to Tenant's trade fixtures or 
removable personal property; and (c) third, to Landlord, the remainder of 
such award, whether as compensation for reduction in the value of the 
leasehold. the taking of the fee, or otherwise.  If this Lease is not 
terminated, Landlord shall repair any damage to the Property caused by the 
Condemnation, except that Landlord shall not be obligated to repair any 
damage for which Tenant has been reimbursed by the condemning authority.  If 
the severance damages received by Landlord are not sufficient to pay for such 
repair, Landlord shall have the right to either terminate this Lease or make 
such repair at Landlord's expense.

ARTICLE NINE:  ASSIGNMENT AND SUBLETTING

<PAGE>

                                                                             17

     Section 9.01.  LANDLORD'S CONSENT REQUIRED.  No portion of the Property or
of Tenant's interest in this Lease may be acquired by any other person or
entity, whether by sale, assignment, mortgage, sublease, transfer, operation of
law, or act of tenant, without Landlord's prior written consent, except as
provided in Section 9.02 below.  Landlord has the right to grant or withhold its
consent as provided in Section 9.05 below.  Any attempted transfer without
consent shall be void and shall constitute a non-curable breach of this Lease. 
(deleted and initialed)

     Section 9.02.  TENANT AFFILIATE.  Tenant may assign this Lease or sublease
the Property, without Landlord's consent, to a corporation which controls, is
controlled by or is under common control with Tenant, or to any corporation
resulting from the merger of or consolidation with Tenant ("Tenant's
Affiliate").  In such case, any Tenant's Affiliate shall assume in writing all
of Tenant's obligations under this Lease.    

     Section 9.03.  NO RELEASE OF TENANT.  No transfer permitted by this Article
Nine, whether with or without Landlord's consent, shall release Tenant or change
Tenant's primary liability to pay the rent and to perform all other obligations
of Tenant under this Lease.  Landlord's acceptance of rent from any other person
is not a waiver of any provision of this Article Nine.  Consent to one transfer
is not a consent to any subsequent transfer.  If Tenant's transferee defaults
under this Lease, Landlord may proceed directly against Tenant without pursuing
remedies against the transferee.  Landlord may consent to subsequent assignments
or modifications of this Lease by Tenant's transferee, without notifying Tenant
or obtaining its consent.  Such action shall not relieve Tenant's liability
under this Lease.

     Section 9.04.  OFFER TO TERMINATE.  If Tenant desires to assign the Lease
or sublease the Property, Tenant shall have the right to offer, in writing, to
terminate the Lease as of a date specified in the offer.  If Landlord elects in
writing to accept the offer to terminate within twenty (20) days after notice of
the offer, the Lease shall terminate as of the date specified and all the terms
and provisions of the Lease governing termination shall apply.  If Landlord does
not so elect, the Lease shall continue in effect until otherwise terminated and
the provisions of Section 9.05 with respect to any proposed transfer shall
continue to apply.

     Section 9.05.  LANDLORD'S CONSENT.

     (a)  Tenant's request for consent to any transfer described in Section 9.01
shall set forth in writing the details of the proposed transfer, including the
name, business and financial condition of the prospective transferee, financial
details of the proposed transfer (e.g., the term of and the rent and security
deposit payable under any proposed assignment or sublease), and any other
information Landlord deems relevant.  Landlord shall have the right to withhold
consent, if reasonable, or to grant consent, based on the following factors: (i)
the business of the proposed assignee or subtenant and the proposed use of the
Property; (ii) the net worth and financial reputation of the proposed assignee
or subtenant; (iii) Tenant's compliance with all of its obligations under the
Lease; and (iv) such other factors as Landlord may reasonably deem relevant.  If
Landlord objects to a proposed 

<PAGE>

                                                                              18

assignment solely because of the net worth and/or financial reputation of the
proposed assignee, Tenant may nonetheless sublease (but not assign), all or a
portion of the Property to the proposed transferee, but only on the other terms
of the proposed transfer.

     (b)  If Tenant assigns or subleases, the following shall apply:

          (i)  Tenant shall pay to Landlord as Additional Rent under the Lease
     the Landlord's Share (stated in Section 1.14) of the Profit (defined below)
     on such transaction as and when received by Tenant, unless Landlord gives
     written notice to Tenant and the assignee or subtenant that Landlord's
     Share shall be paid by the assignee or subtenant to Landlord directly.

     The "Profit" means (A) all amounts paid to Tenant for such assignment or
     sublease, including "key" money, monthly rent in excess of the monthly rent
     payable under the Lease, and all fees and other consideration paid for the
     assignment or sublease, including fees under any collateral agreements,
     less (B) costs and expenses directly incurred by Tenant in connection with
     the execution and performance of such assignment or sublease for real
     estate broker's commissions and costs of renovation or construction of
     tenant improvements required under such assignment or sublease.  Tenant is
     entitled to recover such costs and expenses before Tenant is obligated to
     pay the Landlord's Share to Landlord.  The Profit in the case of a sublease
     of less than all the Property is the rent allocable to the subleased space
     as a percentage on a square footage basis.

          (ii) Tenant shall provide Landlord a written statement certifying all
     amounts to be paid from any assignment or sublease of the Property within
     thirty (30) days after the transaction documentation is signed, and
     Landlord may inspect Tenant's books and records to verify the accuracy of
     such statement.  On written request, Tenant shall promptly furnish to
     Landlord copies of all the transaction documentation, all of which shall be
     certified by Tenant to be complete, true and correct.  Landlord's receipt
     of Landlord's Share shall not be a consent to any further assignment or
     subletting.  The breach of Tenant's obligation under this Paragraph 9.05(b)
     shall be a material default of the Lease.

     Section 9.06  NO MERGER.  No merger shall result from Tenant's sublease of
the Property under this Article Nine, Tenant's surrender of this Lease or the
termination of this Lease in any other manner.  In any such event, Landlord may
terminate any or all subtenancies or succeed to the interest of Tenant as
sublandlord under any or all subtenancies.

ARTICLE TEN: DEFAULTS; REMEDIES

     Section 10.01.  COVENANTS AND CONDITIONS.  Tenant's performance of each of
Tenant's obligations under this Lease is a condition as well as a covenant. 
Tenant's right to continue in 

<PAGE>

                                                                             19


possession of the Property is conditioned upon such performance.  Time is of the
essence in the performance of all covenants and conditions.

     Section 10.02.  DEFAULTS.  Tenant shall be in material default under this
Lease:

     (a)  If Tenant abandons the Property or if Tenant's vacation of  the 
Property results in the  cancellation of any Insurance described in Section
4.04;

      (b) If Tenant fails to pay rent or any other charge (deleted per initials)
[after 10 days written notice that the same is past] (handwritten comments);

     (c)  If Tenant fails to perform any of Tenant's non-monetary obligations
under this Lease for a period of thirty (30) days after written notice from
Landlord; provided that if more than thirty (30) days are required to complete
such performance, Tenant shall not be in default if Tenant commences such
performance within the thirty (30)-day period and thereafter diligently pursues
its completion.  However, Landlord shall not be required to give such notice if
Tenant's failure to perform constitutes a non-curable breach of this Lease.  The
notice required by this Paragraph is intended to satisfy any and all notice
requirements imposed by law on Landlord and is not in addition to any such
requirement.

     (d) (i) If Tenant makes a general assignment or general arrangement for the
benefit of creditors; (ii) if a petition for adjudication of bankruptcy or for
reorganization or rearrangement is filed by or against Tenant and is not
dismissed within thirty (30) days; (iii) if a trustee or receiver is appointed
to take possession of substantially all of Tenant's assets located at the
Property or of Tenant's interest in this Lease and possession is not restored to
Tenant within thirty (30) days; or (iv) if substantially all of Tenant's assets
located at the Property or of Tenant's interest in this Lease is subjected to
attachment, execution or other judicial seizure which is not discharged within
thirty (30) days.  If a court of competent jurisdiction determines that any of
the acts described in this subparagraph (d) is not a default under this Lease,
and a trustee is appointed to take possession (or if Tenant remains a debtor in
possession) and such trustee or Tenant transfers Tenant's interest hereunder,
then Landlord shall receive, as Additional Rent, the excess, if any, of the rent
(or any other consideration) paid in connection with such assignment or sublease
over the rent payable by Tenant under this Lease.

     (e) If any guarantor of the  Lease revokes or otherwise terminates, or
purports to revoke  or  otherwise  terminate,  any guaranty of all or any
portion of Tenant's obligations under the Lease.  Unless otherwise expressly
provided, no guaranty of  the Lease is revocable.

     Section 10.03.  REMEDIES.  On the occurrence of any material default by
Tenant, Landlord may, at any time thereafter, with or without notice or demand
and without limiting Landlord in the exercise of any right or remedy which
Landlord may have:

<PAGE>

                                                                             20

     (a)  Terminate Tenant's right to possession of the Property by any lawful
means, in which case this Lease shall terminate and Tenant shall immediately
surrender possession of the Property to Landlord.  In such event, Landlord shall
be entitled to recover from Tenant all damages incurred by Landlord by reason of
Tenant's default, including (i) the worth at the time of the award of the unpaid
Base Rent, Additional Rent and other charges which Landlord had earned at the
time of the termination; (ii) the worth at the time of the award of the amount
by which the unpaid Base Rent, Additional Rent and other charges which Landlord
would have earned after termination until the time of the award exceeds the
amount of such rental loss that Tenant proves Landlord could have reasonably
avoided; (iii) the worth at the time of the award of the amount by which the
unpaid Base Rent, Additional Rent and other charges which Tenant would have paid
for the balance of the Lease Term after the time of award exceeds the amount of
such rental loss that Tenant proves Landlord could have reasonably avoided; and
(iv) any other amount necessary to compensate Landlord for all the detriment
proximately caused by Tenant's failure to perform its obligations under the
Lease or which in the ordinary course of things would be likely to result
therefrom, including, but not limited to, any costs or expenses Landlord incurs
in maintaining or preserving the Property after such default, the cost of
recovering possession of the Property, expenses of reletting, including
necessary renovation or alteration of the Property, Landlord's reasonable
attorneys' fees incurred in connection therewith, and any real estate commission
paid or payable.  As used in subparts (i) and (ii) above, the "worth at the time
of the award" is computed by allowing interest on unpaid amounts at the rate of
fifteen percent (15%) per annum, or such lesser amount as may then be the
maximum lawful rate.  As used in subpart (iii) above, the "worth at the time of
the award" is computed by discounting such amount at the discount rate of the
Federal Reserve Bank of San Francisco at the time of the award, plus one percent
(1%).  If Tenant has abandoned the Property, Landlord shall have the option of
(i) retaking possession of the Property and recovering from Tenant the amount
specified in this Paragraph 10.03(a), or (ii) proceeding under Paragraph
10.03(b);

     (b)  Maintain Tenant's right to possession, in which case this Lease shall
continue in effect whether or not Tenant has abandoned the Property.  In such
event, Landlord shall be entitled to enforce all of Landlord's rights and
remedies under this Lease, including the right to recover the rent as it becomes
due;

     (c)  Pursue any other remedy now or hereafter available to Landlord under
the laws or judicial decisions of the state in which the Property is located.

(Deletion of Section 10.04 per initials)

     Section 10.05.  AUTOMATIC TERMINATION.  Notwithstanding any other term or
provision hereof to the contrary, the Lease shall terminate on the occurrence of
any act which affirms the Landlord's intention to terminate the Lease as
provided in Section 10.03 hereof, including the filing of an unlawful detainer
action against Tenant.  On such termination, Landlord's damages for default
shall include all costs and fees, including reasonable attorneys' fees that
Landlord incurs in connection with the filing, commencement, pursuing and/or
defending of any action in any 

<PAGE>

                                                                             21

bankruptcy court or other court with respect to the Lease; the obtaining of
relief from any stay in bankruptcy restraining any action to evict Tenant; or
the pursuing of any action with respect to Landlord's right to possession of the
Property.  All such damages suffered (apart from Base Rent and other rent
payable hereunder) shall constitute pecuniary damages which must be reimbursed
to Landlord prior to assumption of the Lease by Tenant or any successor to
Tenant in any bankruptcy or other proceeding.

     Section 10.06. CUMULATIVE REMEDIES.  Landlord's exercise of any right or
remedy shall not prevent it from exercising any other right or remedy.

ARTICLE ELEVEN:  PROTECTION OF LENDERS

     Section 11.01.  SUBORDINATION.  Landlord shall have the right to
subordinate this Lease to any ground lease, deed of trust or mortgage
encumbering the Property, any advances made on the security thereof and any
renewals, modifications, consolidations, replacements or extensions thereof,
whenever made or recorded.  *See Section III of Addendum to Lease for additional
terms and conditions.  Tenant shall cooperate with Landlord and shall any lender
which is acquiring a security interest in the Property or the Lease.  Tenant
shall execute such further documents and assurances as such lender may require,
provided that Tenant's obligations under this Lease shall not be increased in
any material way (the performance of ministerial acts shall not be deemed
material), and Tenant shall not be deprived of its rights under this Lease. 
Tenant's right to quiet possession of the Property during the Lease Term shall
not be disturbed if Tenant pays the rent and performs all of Tenant's
obligations under this Lease and is not otherwise in default.  If any ground
lessor, beneficiary or mortgagee elects to have this Lease prior to the lien of
its ground lease, deed of trust or mortgage and gives written notice thereof to
Tenant, this Lease shall be deemed prior to such ground lease, deed of trust or
mortgage whether this Lease is dated prior or subsequent to the date of said
ground lease, deed of trust or mortgage or the date of recording thereof.

     Section 11.02.  ATTORNMENT.  If Landlord's interest in the Property is
acquired by any ground lessor, beneficiary under a deed of trust, mortgagee, or
purchaser at a foreclosure sale, Tenant shall attorn to the transferee of or
successor to Landlord's interest in the Property and recognize such transferee
or successor as Landlord under this Lease.  Tenant waives the protection of any
statute or rule of law which gives or purports to give Tenant any right to
terminate this Lease or surrender possession of the Property upon the transfer
of Landlord's interest.

     Section 11.03.  SIGNING OF DOCUMENTS.  Tenant shall sign and deliver any
instrument or documents necessary or appropriate to evidence any such attornment
or subordination or agreement to do so.  If Tenant fails to do so within ten
(10) days after written request, Tenant hereby makes, constitutes and
irrevocably appoints Landlord, or any transferee or successor of Landlord, the
attorney-in-fact of Tenant to execute and deliver any such instrument or
document.

<PAGE>

                                                                             22

     Section. 11.04.  ESTOPPEL CERTIFICATES.

     (a)  Upon Landlord's written request, Tenant shall execute, acknowledge and
deliver to Landlord a written statement certifying: (i) that none of the terms
or provisions of this Lease have been changed (or if they have been changed,
stating how they have been changed); (ii) that this Lease has not been cancelled
or terminated; (iii) the last date of payment of the Base Rent and other charges
and the time period covered by such payment; (iv) that Landlord is not in
default under this Lease (or, if Landlord is claimed to be in default, stating
why); and (v) such other representatives or information with respect to Tenant
or the Lease as Landlord may reasonably request or which any prospective
purchaser or encumbrancer of the Property may require.  Tenant shall deliver
such statement to Landlord within ten (10) days after Landlord's request. 
Landlord may give any such statement by Tenant to any prospective purchaser or
encumbrancer of the Property.  Such purchaser or encumbrancer may rely
conclusively upon such statement as true and correct.

     (b) If Tenant does not deliver may statement to Landlord within such ten
(10-day period, Landlord, and any prospective purchaser or encumbrancer, may
conclusively presume and rely upon the following facts:  (i) that the terms and
provisions of this Lease have not been changed except as otherwise represented
by Landlord; (ii) that this Lease has not been cancelled or terminated except as
otherwise represented by Landlord; (iii) that not more than one month's Base
Rent or other charges have been paid in advance; and (iv) that Landlord is not
in default under the Lease. In such event, Tenant shall be estopped from denying
the truth of such facts.

     Section. 11.05.  TENANT'S FINANCIAL CONDITION.  Within ten (10) days after
written request from Landlord, Tenant shall deliver to Landlord such financial
statements as Landlord reasonably requires to verify the net wroth of Tenant or
any assignee, subtenant, or guarantor of Tenant.  In addition, Tenant shall
deliver to any lender designated by Landlord any financial statements required
by such lender to facilitate the financing or refinancing of the Property. 
Tenant represents and warrants Landlord that each such financial statement is a
true and accurate statement as of the date of such statement.  All financial
statements shall be confidential and shall be used only for the purposes set
forth in this Lease.

ARTICLE TWELVE: LEGAL COSTS   

     Section 12.01. LEGAL PROCEEDINGS.  If Tenant or Landlord shall be in breach
or default under this Lease, such party (the"Defaulting Party") shall reimburse
the other party (the "Nondefaulting Party") upon demand for any costs or
expenses that the Nondefaulting Party incurs in connection with any breach or
default of the Defaulting Party under this Lease, whether or not suit is
commenced or judgment entered.  Such costs shall include legal fees and costs
incurred for the negotiation of a settlement, enforcement of rights or
otherwise.  Furthermore, if any action for breach of or to enforce the
provisions of this Lease is commenced, the court in such action shall award to
the party in whose favor a judgment is entered, a reasonable sum as attorneys'
fees and costs.  The losing party in such action shall pay such attorneys' fees
and costs.  Tenant shall also indemnify 

<PAGE>

                                                                             23

Landlord against and hold Landlord harmless from all costs, expenses, demands
and liability Landlord may incur if Landlord becomes or is made a party to any
claim or action (a) instituted by Tenant against any third party, or by any
third party against Tenant, or by or against any person holding any interest
under or using the Property by license of or agreement with Tenant; (b) for
foreclosure of any lien for labor or material furnished to or for Tenant or such
other person; (c) otherwise arising out of or resulting from any act or
transaction of Tenant or such other person; or (d) necessary to protect
Landlord's interest under this Lease in a bankruptcy proceeding, or other
proceeding under Title 11 of the United States Code, as amended.  Tenant shall
defend Landlord against any such claim or action at Tenant's expense with
counsel reasonably acceptable to Landlord.  (deleted and initialed) Addition: 
See Section III of Addendum to Lease for additional terms and conditions.  

     Section 12.02.  LANDLORD'S CONSENT.  Tenant shall pay Landord's reasonable
attorneys' fees incurred to a maximum of $3,000 in connection with Tenant's
request for Landlord's consent under Article Nine (Assignment and Subletting),
or in connection with any other act which Tenant proposes to do and which
requires Landlord's consent.

ARTICLE THIRTEEN:  MISCELLANEOUS PROVISIONS

     Section 13.01.  NON-DISCRIMINATION.  Tenant promises, and it is a condition
to the continuance of this Lease, that there will be no discrimination against,
or segregation of, any person or group of persons on the basis of race, color,
sex, creed, national origin or ancestry in the leasing, subleasing,
transferring, occupancy, tenure or use of the Property or any portion thereof.

     Section 13.02.  LANDLORD'S LIABILITY; CERTAIN DUTIES.

     (a)  As used in this Lease, the term "Landlord" means only the current
owner or owners of the fee title to the Property or Project or the leasehold
estate under a ground lease of the Property or Project at the time in question. 
Each Landlord is obligated to perform the obligations of Landlord under this
Lease only during the time such Landlord owns such interest or title.  Any
Landlord who transfers its title or interest is relieved of all liability with
respect to the obligations of Landlord under this Lease to be performed on or
after the date of transfer.  However, each Landlord shall deliver to its
transferee all funds that Tenant previously paid if such funds have not yet been
applied under the terms of this Lease.

     (b)  Tenant shall give written notice of any failure by Landlord to perform
any of its obligations under this Lease to Landlord and to any ground lessor,
mortgagee or beneficiary under any deed of trust encumbering the Property whose
name and address have been furnished to Tenant in writing.  Landlord shall not
be in default under this Lease unless Landlord (or such ground lessor, mortgagee
or beneficiary) fails to cure such non-performance within thirty (30) days after
receipt of Tenant's notice.  However, if such non-performance reasonably
requires more than thirty (30) days 

<PAGE>

                                                                             24

to cure, Landlord shall not be in default if such cure is commenced within such
thirty (30)-day period and thereafter diligently pursued to completion.

     (c)  Notwithstanding any term or provision herein to the contrary, the
liability of Landlord for the performance of its duties and obligations under
this Lease is limited to Landlord's interest in the Property and the Project,
and neither the Landlord nor its partners, shareholders, officers or other
principals shall have any personal liability under this Lease.

     Section 13.03.  SEVERABILITY.  A determination by a court of competent
jurisdiction that any provision of this Lease or any part thereof is illegal or
unenforceable shall not cancel or invalidate the remainder of such provision or
this Lease, which shall remain in full force and effect.

     Section 13.04.  INTERPRETATION.  The captions of the Articles or Sections
of this Lease are to assist the parties in reading this Lease and are not a part
of the terms or provisions of this Lease.  Whenever required by the context of
this Lease, the singular shall include the plural and the plural shall include
the singular.  The masculine, feminine and neuter genders shall each include the
other.  In any provision relating to the conduct, acts or omissions of Tenant,
the term "Tenant" shall include Tenant's agents, employees, contractors,
invitees, successors or others using the Property with Tenant's expressed or
implied permission.

     Section 13.05.  INCORPORATION OF PRIOR AGREEMENTS; MODIFICATIONS.  This
Lease is the only agreement between the parties pertaining to the lease of the
Property and no other agreements are effective.  All amendments to this Lease
shall be in writing and signed by all parties.  Any other attempted amendment
shall be void.

     Section 13.06.  NOTICES.  All notices required or permitted under this
Lease shall be in writing and shall be personally delivered or sent by certified
mail, return receipt requested, postage prepaid.  Notices to Tenant shall be
delivered to the address specified in Section 1.03 above, except that upon
Tenant's taking possession of the Property, the Property shall be Tenant's
address for notice purposes.  Notices to Landlord shall be delivered to the
address specified in Section 1.02 above.  All notices shall be effective upon
delivery.  Either party may change its notice address upon written notice to the
other party.

     Section 13.07.  WAIVERS.  All waivers must be in writing and signed by the
waiving party.  Landlord's failure to enforce any provision of this Lease or its
acceptance of rent shall not be a waiver and shall not prevent Landlord from
enforcing that provision or any other provision of this Lease in the future.  No
statement on a payment check from Tenant or in a letter accompanying a payment
check shall be binding on Landlord.  Landlord may, with or without notice to
Tenant, negotiate such check without being bound to the conditions of such
statement.

     Section 13.08.  NO RECORDATION.  Tenant shall not record this Lease without
prior written consent from Landlord.  However, either Landlord or Tenant may
require that a "Short Form" 

<PAGE>

                                                                             25

memorandum of this Lease executed by both parties be recorded.  The party
requiring such recording shall pay all transfer taxes and recording fees.

     Section 13.09.  BINDING EFFECT; CHOICE OF LAW.  This Lease binds any party
who legally acquires any rights or interest in this Lease from Landlord or
Tenant.  However, Landlord shall have no obligation to Tenant's successor unless
the rights or interests of Tenant's successor are acquired in accordance with
the terms of this Lease.  The laws of the state in which the Property is located
shall govern this Lease.

     Section 13.10.  CORPORATE AUTHORITY; PARTNERSHIP AUTHORITY.  If Tenant is a
corporation, each person signing this Lease on behalf of Tenant represents and
warrants that he has full authority to do so and that this Lease binds the
corporation.  Within thirty (30) days after this Lease is signed, Tenant shall
deliver to Landlord a certified copy of a resolution of Tenant's Board of
Directors authorizing the execution of this Lease or other evidence of such
authority reasonably acceptable to Landlord.  If Tenant is a partnership, each
person or entity signing this Lease for Tenant represents and warrants that he
or it is a general partner of the partnership, that he or it has full authority
to sign for the partnership and that this Lease binds the partnership and all
general partners of the partnership.  Tenant shall give written notice to
Landlord of any general partner's withdrawal or addition.  Within thirty (30)
days after this Lease is signed, Tenant shall deliver to Landlord a copy of
Tenant's recorded statement of partnership or certificate of limited
partnership.

     Section 13.1 1.  JOINT AND SEVERAL LIABILITY.  All parties signing this
Lease as Tenant shall be jointly and severally liable for all obligations of
Tenant.

     Section 13.12.  FORCE MAJEURE.  If Landlord cannot perform any of its
obligations due to events beyond Landlord's control, the time provided for
performing such obligations shall be extended by a period of time equal to the
duration of such events.  Events beyond Landlord's control include, but are not
limited to, acts of God, war, civil commotion, labor disputes, strikes, fire,
flood or other casualty, shortages of labor or material, government regulation
or restriction and weather conditions.

     Section 13.13.  EXECUTION OF LEASE.  This Lease may be executed in
counterparts and, when all counterpart documents are executed, the counterparts
shall constitute a single binding instrument.  Landlord's delivery of this Lease
to Tenant shall not be deemed to be an offer to lease and shall not be binding
upon either party until executed and delivered by both parties.

     Section 13.14.  SURVIVAL.  All representations and warranties of Landlord
and Tenant shall survive the termination of this Lease.

ARTICLE FOURTEEN:  BROKERS

<PAGE>

                                                                             26

     Section 14.01.  BROKER'S FEE.  When this Lease is signed by and delivered
to both Landlord and Tenant, Landlord shall pay a real estate commission to
Landlord's Broker named in Section 1.08 above, if any, as provided in the
written agreement between Landlord and Landlord's Broker, or the sum stated in
Section 1.09 above for services rendered to Landlord by Landlord's Broker in
this transaction.  Landlord shall pay Landlord's Broker a commission if Tenant
exercises any option to extend the Lease Term or to buy the Property, or any
similar option or right which Landlord may grant to Tenant, or if Landlord's
Broker is the procuring cause of any other lease or sale entered into between
Landlord and Tenant covering the Property.  Such commission shall be the amount
set forth in Landlord's Broker's commission schedule in effect as of the
execution of this Lease.  If a Tenant's Broker is named in Section 1.08 above,
Landlord's Broker shall pay an appropriate portion of its commission to Tenant's
Broker if so provided in any agreement between Landlord's Broker and Tenant's
Broker.  Nothing contained In this Lease shall impose any obligation on Landlord
to pay a commission or fee to any party other than Landlord's Broker.

     Section 14.02.  PROTECTION OF BROKERS.  If Landlord sells the Property, or
assigns Landlord's interest in this Lease, the buyer or assignee shall, by
accepting such conveyance of the Property or assignment of the Lease, be
conclusively deemed to have agreed to make all payments to Landlord's Broker
thereafter required of Landlord under this Article Fourteen.  Landlord's Broker
shall have the right to bring a legal action to enforce or declare rights under
this provision.  The prevailing party in such action shall be entitled to
reasonable attorneys' fees to be paid by the losing party.  Such attorneys' fees
shall be fixed by the court in such action.  This Paragraph is included in this
Lease for the benefit of Landlord's Broker.

     Section 14.03.  AGENCY DISCLOSURE; NO OTHER BROKERS.  Landlord and Tenant
each warrant that they have dealt with no other real estate broker(s) in
connection with this transaction except: CB Commercial Real Estate Group, Inc.,
who represents Informix Software, Inc. and 3905 Bohannon Partners who represents

     In the event that CB Commercial represents both Landlord and Tenant,
Landlord and Tenant hereby confirm that they were timely advised of the dual
representation and that they consent to the same, and that they do not expect
said broker to disclose to either of them the confidential information of the
other party.

ARTICLE FIFTEEN:  COMPLIANCE

     The parties hereto agree to comply with all applicable federal, state and
local laws, regulations, codes, ordinances and administrative orders having
jurisdiction over the parties, property or the subject matter of this Agreement,
including, but not limited to, the 1964 Civil Rights Act and all amendments
thereto, the Foreign Investment In Real Property Tax Act, the Comprehensive
Environmental Response Compensation and Liability Act, and The Americans With
Disabilities Act.

<PAGE>

                                                                             27

     ADDITIONAL PROVISIONS MAY BE SET FORTH IN A RIDER OR RIDERS ATTACHED HERETO
OR IN THE BLANK SPACE BELOW.  IF NO ADDITIONAL PROVISIONS ARE INSERTED, PLEASE
DRAW A LINE THROUGH THE SPACE BELOW.

     Landlord and Tenant have signed this Lease at the place and on the dates
specified adjacent to their signatures below and have initialed all Riders which
are attached to or incorporated by reference in this Lease.

                                        "LANDLORD"
Signed on  5/30/1995                    3905 Bohannon Partners
at Redwood City, CA
                                        By:  /s/ Alyn Beals
                                        Its: Managing Partner


                                        "TENANT"
Signed on (blank), 19___                Informix Software. Inc.
at (blank)                              By:  /s/ David H. Stanley, Vice
                                        President Legal and Corporate Services
                                        and General Counsel

     IN ANY REAL ESTATE TRANSACTION, IT IS RECOMMENDED THAT YOU CONSULT WITH A
PROFESSIONAL, SUCH AS A CIVIL ENGINEER, INDUSTRIAL HYGIENIST OR OTHER PERSON
WITH EXPERIENCE IN EVALUATING THE CONDITION OF THE PROPERTY, INCLUDING THE
POSSIBLE PRESENCE OF ASBESTOS, HAZARDOUS MATERIALS AND UNDERGROUND STORAGE
TANKS.

     THIS PRINTED FORM LEASE HAS BEEN DRAFTED BY LEGAL COUNSEL AT THE DIRECTION
OF THE SOUTHERN CALIFORNIA CHAPTER OF THE SOCIETY OF INDUSTRIAL AND OFFICE
REALTORS INC.  NO REPRESENTATION OR RECOMMENDATION IS MADE BY THE SOUTHERN
CALIFORNIA CHAPTER OF THE SOCIETY OF INDUSTRIAL AND OFFICE REALTORS,
INC.-Registered Trademark-, ITS LEGAL COUNSEL, THE REAL ESTATE BROKERS NAMED
HEREIN, OR THEIR EMPLOYEES OR AGENTS, AS TO THE LEGAL SUFFICIENCY, LEGAL EFFECT
OR TAX CONSEQUENCES OF THIS LEASE OR OF THIS TRANSACTION.  LANDLORD AND TENANT
SHOULD RETAIN LEGAL COUNSEL TO ADVISE THEM ON SUCH MATTERS AND SHOULD RELY UPON
THE ADVICE OF SUCH LEGAL COUNSEL.

<PAGE>

CB COMMERCIAL ADDENDUM TO INDUSTRIAL REAL ESTATE LEASE

This is an Addendum to the Industrial Real Estate Lease dated April 10, 1995,
between 3905 Bohannon Partners as Landlord and Informix Software, Inc. As Tenant
(the "Lease"), concerning the property known as 3905 Bohannon Drive, Menlo Park,
California  94025, as more specifically described in the Lease.

I.   The following Rent Schedule is for those suites identified as "A" through
     "G" per the attached Site Plan.

     1.   Suite "E" (formerly Gupta), approximately 4,136 square feet, will be
          $0.95 industrial gross commencing June 1, 1995 or as soon as possible
          for a monthly rent total of $3,929.20.

     2.   Suite "D" (formerly Tabula Interactive), approximately 1,487 square
          feet, will be $1.50 industrial gross commencing June 1, 1995 for a
          monthly rent total of $2,230.50.  (NOTE:  This is subject to the
          successful relocation of Tabula to Suite "A".)

     3.   Suite "G" (formerly GSA), approximately 3,670 square feet, will be
          $0.95 industrial gross commencing November 1, 1995 for a monthly rent
          total of $3,486.50.

     4.   Suite "C" (formerly ETA), approximately 1.034 square feet, will be
          $0.75 industrial gross commencing July 1, 1995 for a monthly rent
          total of $775.50.  Rent will adjust to $0,95 on November 1, 1995 for 
          a monthly rent total of $982.30.

     5.   Monthly rent commencing June 1, 1995   Suites E & D         $6,159.70
          Monthly rent commencing July 1, 1995   Suites E, C & D      $6,935.20
          Monthly rent commencing Nov. 1, 1995   Suites E, C, D & G  $10,628.50

     6.   The lease expiration for all suites will be October 30, 2000.

II.  THE FOLLOWING ADDITIONAL GENERAL PROVISIONS SHALL APPLY TO THE LEASE.

     1.   Informix will take the leased premises on an "As Is" basis and will be
          solely responsible for tenant improvement costs.  Informix will
          construct a computer center and assorted uses in compliance will all
          state, federal, and city codes and regulations.

     2.   Informix will be allowed, at Informix's sole cost and expense and
          within Menlo Park City signage guidelines to plan a monument sign at
          the entrance to the Property, while still [word unintelligible]
          signage capacity for Gupta's sign.

     3.   Landlord will contribute a maximum of Five Hundred Dollars ($500.00)
          to Tabula for moving expenses.  Informix will contribute a maximum of
          Two Thousand Six Hundred Dollars ($2,600.00) to Tabula for moving
          expenses.

                                         -2-

<PAGE>

     4.   Informix will have two extension options at fair market value.  The
          fair market rental value of the property shall be determined without
          regard to any improvements which have been made to the Property at
          Tenant's cost and expense.  If the parties do not mutually agree on
          the fair market rental within 30 days prior to the beginning of the
          option term, each party shall select a real estate broker with at
          least five years experience leasing industrial buildings in Santa
          Clara or San Mateo County who shall not have worked for either party
          within the last ten years.  If the two real estate brokers are unable
          to agree on a fair market rental value, the two real estate brokers
          shall select a third real estate broker with similar qualifications
          who shall estimate the fair market rental value of the Property.  This
          determination shall be averaged with the closest determination of the
          other two brokers to determine the fair market rental value for the
          option term.  Each party shall bear the cost of the broker's selected
          and one half of the cost of any third broker.  The first option will
          extend the term of all leased premises to September 30, 2001.  The
          second option will have a two year extension commencing October 1,
          2001.

     5.   Informix will have the right of first refusal on space F[remainder of
          sentence deleted by initial].  The rent will be at fair market value.

     6.   Tenant is not responsible for structural changes required by law which
          do not relate to Tenant's specific use or improvements. 

III. The following Amendments shall apply to specific Lease terms.

     1.   Section 5.03.  Hazardous Materials.  Landlord represents and warrants
          to Tenant that to the best of Landlord's knowledge there are no
          Hazardous Materials located on the Property as of the date of
          execution of this Lease in violation of any governmental laws or
          regulations.  Landlord shall indemnify, defend and hold Tenant
          harmless from and against any claims or liability incurred by Tenant
          as a result of the breach of the foregoing representation and
          warranty.

     2.   Section 6.06.  Condition Upon Termination.  At lease termination,
          Tenant may remove any equipment specific to a computer room use that
          is not affixed to the property, and restore the property to its prior
          condition.  At Landlord's discretion, Tenant may be required to
          restore any improvements removed by Tenant during the course of their
          tenancy.

     3.   Section 7.01(c).  Partial Damage to Property.  ; provided, however,
          that if Tenant exercises either of its options to extend the term of
          this Lease within thirty (30) days of Landlord's election, this
          section shall not apply.

     4.   Section 11.01.  Subordination.  ;provided Tenant receives a
          nondisturbance  agreement from the party to whom it is subordinated.

                                         -3-

<PAGE>

     5.   Section 12.01.  Legal Proceedings.  Any disputes outside of rental
          determination will be settled through binding arbitration in the
          County of San Mateo.  Prevailing party shall have its court/attorney
          costs covered up to the maximum of $10,000.

In the event of any conflict between the terms of this Addendum and the Lease,
the terms of this Addendum shall prevail.



Landlord: 3905 Bohannon Partners                  Purchaser:  Informix Software, Inc.
           ---------------------------                      -----------------------------------
By:       /s/ Alyn Beals                          By:    /s/ David H. Stanley     
           ---------------------------                   --------------------------------------
          Alyn Beals                                     David H. Stanley, Vice President

Title:    Managing Partner                        Title: Legal & Corp. Services/General Counsel
          ----------------------------                   --------------------------------------
Address:  2596 Bay Road                           Address: 4100 Bohannon Drive
          ----------------------------                     -------------------------------------
          Redwood City, Ca  94053                           Menlo Park, Ca 94025
          ---------------------------                      -------------------------------------

Date:     5/30/95                                 Date:
          ----------------------------                 -----------------------------------------



                                         -4-

<PAGE>

SECOND ADDENDUM TO LEASE DATED APRIL 10, 1995, BY AND BETWEEN 3905 BOHANNON
PARTNERS, LESSOR, AND INFORMIX SOFTWARE, INC., LESSEE, FOR THAT SPACE LOCATED AT
3905 BOHANNON DRIVE, MENLO PARK, CA  94025

--------------------------------------------------------------------------------

Per this agreement, Lessee shall occupy (110' x 50') Parking Lot Storage @ 3905
Bohannon Drive, Menlo Park, CA  94025, as specified on page A-1 of plans dated
11/15/95, by Charles Doerr, Architect.  Lessee's occupancy of this space shall
be under the same terms and conditions of the existing Lease dated April 10,
1995, for 3905 Bohannon Drive, Suites C, D, E, & G, Menlo Park, CA  94025 with
the exception of the following items:


     RENT:                    On this added five thousand five hundred square
                              feet (5,500s.f.) of storage area, the monthly rent
                              shall be fifteen cents ($0.15) per square foot or
                              eight hundred twenty-five dollars ($825.00)
                              industrial gross.  This amount is subject to
                              annual increase as per Section 3.02 of the
                              original Lease Agreement.

     COMMENCEMENT DATE:       February 1, 1997

     Lessee shall be responsible for all clean up and/or remediation costs due
to any potential leakage of hazardous materials from the storage tank to be
placed in the parking lot storage area.

     At termination of tenancy, Lessee will be required, at Lessor's discretion,
to return the Premises to its original condition.

Please sign below to indicate your understanding and acceptance of this
agreement.

3905 BOHANNON PARTNERS



/s/ Alyn T. Beals                                 1/17/97
-------------------------                         ------------------------
ALYN T. BEALS                                     DATE
MANAGING PARTNER


INFORMIX SOFTWARE, INC.


/s/ David H. Stanley                              1/27/97
-------------------------                         ------------------------
DAVID H. STANLEY                                  DATE
VICE PRESIDENT

<PAGE>

               THIRD ADDENDUM TO INDUSTRIAL REAL ESTATE LEASE

This Third Addendum to industrial Real Estate Lease is made this 17th day of
December 1997, by and between Informix Software, Inc.("Lessee") and 3905
Bohannon Partners ("Lessor").

                                      RECITALS

Lessee currently leases from Lessor approximately 10,327 square feet of building
consisting of Suites C, D, E, and G, and 5,500 square feet of Parking Lot
Storage located at 3905 Bohannon Drive, Menlo Park, California ("Property")
under that Lease dated April 10, 1995, and amended by an Addendum to Industrial
Lease executed by Lessor on May 30, 1995, and amended by Second Addendum to
Lease executed by Lessee on January 27, 1997 ("Lease").

NOW THEREFORE, in the consideration of the above recital and the mutual
covenants and agreements contained herein, the parties hereby amend the Lease as
follows:

     1.   Property: Effective January 1, 1998, the Property is amended to
          include Suite F of approximately 4,183 square feet and Suite A of
          approximately 1,359 square feet.

     2.   Base Rent: Effective January 1, 1998, in addition to the Base Rent
          under the Lease, Lessee shall pay additional Base Rent of $9,144.30
          per month. This additional Base Rent payment shall increase to
          $9,421.40 per month on November 1, 1998 and to $9,698.50 per month on
          November 1, 1999. This additional Base Rent shall not be subject to
          the Cost of Living Increases under Section 3.02 of t he Lease.

     3.   Lessee leases Suites F and A on an "AS IS" basis and will be solely
          responsible for tenant improvement costs.

     4.   The provisions of Section 6.06 of the Lease shall apply to Suites F
          and A.

     5.   Lessee shall not make any alterations to Suite F or A without the
          prior written consent of Lessor which consent shall not be
          unreasonably withheld or delayed.

     6.   Option to Extend. The option to extend is amended as follows:

                    Lessee shall have one option to extend the Lease for a 
               period of three years by giving written notice to Lessor of 
               not less than 120 days prior to the end of the lease term 
               which termination date is October 30, 2000.  The rental rate 
               for the extended term shall be at fair market value.  The fair 
               market value for the Property shall be determined without 
               regard to any improvements which have been made to the, 
               Property at Lessee's cost and expense.  If the parties do not 
               mutually agree on the fair market value within 30 days prior 
               to the beginning of the extended term, each party shall select 
               a real estate broker with at least five years experience 
               leasing industrial buildings in Santa Clara or San Mateo 
               County, who shall not have worked for either party for the 
               past ten years.  The two real estate brokers will within 30 
               days attempt to agree on the fair market value of the 
               Property.  Should the two real estate brokers be unable to 
               agree on a fair market value, the two real estate brokers 
               shall select a third real estate broker with similar 
               qualifications who shall estimate the fair market rental value 
               of the Property.  This determination shall be averaged with 
               the closest determination of 

<PAGE>

               the other two brokers to determine the fair market value for 
               the extended term.  Each party shall bear the cost of their 
               broker and one half of the cost of any third broker.

     7.   Except as specifically modified herein, all terms, covenants and
          conditions of the Lease shall remain in full force. In the event of
          any conflict between this Third Addendum and the Lease, the terms of
          this Addendum shall prevail.

     IN WITNESS WHEREOF, the parties have executed this Amendment on the day and
year first above written.

LESSOR:                                 LESSEE:
3905 Bohannon Partners                  Informix Software Inc.

By: /s/ Authorized Signatory            By: /s/ Robert J. Finocchio

Its: Managing Partner                   Its: President & CEO

Date: 1/9/98                            Date: 1/9/98


<PAGE>

July 2, 1997

Informix Software, Inc.
Worldwide Real Estate and Facilities
Atten:  Lease Administrator
4100 Bohannon Drive
Menlo Park, CA  94025

Re:  Lease Escalation @ 3905 Bohannon Drive, Suites C,D,E,G & Parking Lot
Storage
                        Menlo Park, CA  94025

Dear Sir or Ma'am:

As per Paragraph 5 of the Addendum to your lease dated 4/10/95, for the above
referenced locations, please be informed your monthly rental payment is
increased 3.0% from $11,719.21 to $12,070.79 effective 7/1/97.  The following is
a breakdown of the per unit rent:


                                                 
          Suite C             =  $1,006.86  x  1.03  =  $  1,037.07
          Suite D             =  $2,286.26  x  1.03  =  $  2,354.85
          Suite E             =  $4,027.43  x  1.03  =  $  4,148.25
          Suite G             =  $3,573.66  x  1.03  =  $  3,680.87
          Parking Lot Storage =  $  825.00  x  1.03  =  $    849.75
                                                        -----------
          TOTAL MONTHLY RENT:                           $ 12,070.79


Please remit the total amount due with your July rent payment and adjust your
records for future payments.  Thank you.

Sincerely,

/s/ Sandra Sarvis

Sandra Sarvis
Assistant Property Manager

Source: OneCLE Business Contracts.