<PAGE>   1
                                                                    EXHIBIT 10.2


                  _____________________________________________


                               PURCHASE AGREEMENT

                          dated as of February 1, 1999

                                     between

                       TRIAD SYSTEMS FINANCIAL CORPORATION

                                    as Seller

                                       and

                        MELLON US LEASING, A DIVISION OF
                           MELLON LEASING CORPORATION

                                  as Purchaser

                  _____________________________________________
 
                                 $15,000,000.00


                       __________________________________

                             Purchase and Assignment
                                     Leases
                                Lease Receivables
                                Leased Equipment






                           ___________________________


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         PURCHASE AGREEMENT entered into as of February 1, 1999, between TRIAD
SYSTEMS FINANCIAL CORPORATION, a California corporation ("TSFC"), as seller and
assignor, and MELLON US LEASING, A DIVISION OF MELLON LEASING CORPORATION, a
Pennsylvania corporation ("MUSL"), as purchaser and assignee.


                             I N T R O D U C T I O N

         A. TSFC is a wholly owned subsidiary of COOPERATIVE COMPUTING, INC., a
Delaware corporation formerly known as TRIAD SYSTEMS CORPORATION ("CCI"). CCI
manufactures and TSFC purchases from CCI and leases to its customers computer
systems and software, all in accordance with an Operating and Support Agreement
dated February 1,1999 among CCI, TSFC and MUSL.

         B. MUSL engages in the business of equipment lease financing.

         C. MUSL is willing to purchase from TSFC and TSFC is will to sell to
MUSL certain of its customer leases and the related computer systems and
software, upgrades and add-ons and other equipment for purchase prices equal to
the discounted value of payments under the customer leases, all subject to the
terms and conditions of this Agreement.

         NOW, THEREFORE, in consideration of the foregoing, the parties hereto
agree as follows:

         1. DEFINITIONS

         When used in capitalized form herein, the following terms shall have
the meanings indicated:

         "Anniversary Date" - March 31, 2000.

         "Assignment and Bill of Sale" - an assignment and bill of sale in the
form of Exhibit C.

         "Business Day" - any day other than a Saturday, Sunday or a public or
bank holiday or the equivalent for banks generally under the laws of the State
of California.

         "Closing Date" - with respect to any Purchase - the date on which MUSL
makes a Purchase from TSFC under this Agreement.


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         "Commitment" - the purchase commitment of MUSL to TSFC pursuant to
Section 2.

         "Credit Application" - a credit application in the form of Exhibit D
detailing certain information to be obtained by TSFC with respect to a
prospective lessee and as requested by MUSL.

         "Effective Date" - the date of this Agreement.

         "Eligible Equipment" - new or remanufactured Equipment, including but
not limited to, computer systems and related components, software and
accessories manufactured or sold by CCI or another manufacturer or seller,
having a Purchase Price of not less than One Hundred Thousand Dollars
($100,000.00) subject to an Eligible Lease and not subject to a security
interest or other encumbrance in favor of any corporation, firm or other person.
 
         "Eligible Lease" - a full payout net lease in the form of Exhibit A-1,
naming TSFC as lessor, that:

              (a)  has a noncancellable term of not less than 24 months nor more
                   than 84 months excluding renewals or extensions;

              (b)  provides for (i) Rent and casualty payments in amounts
                   sufficient to repay to MUSL the Purchase Price made in
                   respect of such lease and interest on such Purchase Price at
                   the Rate, (ii) interest on late payments under such lease at
                   a rate not less than the Late Payment Rate and (iii) all
                   payments to be made in United States dollars;

              (c)  provides that the lessor's right to receive payment is
                   absolute and not contingent upon the fulfillment of any
                   condition whatsoever other than the passage of time;

              (d)  covers only Eligible Equipment and includes all hardware and
                   any other systems required to operate any included software;

              (e)  is not subject to any conditions, obligations of, or any
                   right or offset, counterclaim or defense by, the Lessee
                   thereunder;


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              (f)  is a Lease under which the Lessee is not in default; and

              (g)  is in all other respects satisfactory to MUSL.

         "Enforcement Notice" - notice given by MUSL to TSFC pursuant to Section
3.9 of a Lessee Default.
 
         "Equipment" - any and all Eligible Equipment leased to a Lessee by TSFC
under a Lease, located in the United States and purchased by MUSL by the payment
of the Purchase Price by MUSL and the execution and delivery by TSFC to MUSL of
an Assignment and Bill of Sale specifically describing such Eligible Equipment,
together with (i) all accessions, replacements, parts, repairs, fixtures and
accessories incorporated therein or affixed thereto under the Lease, and (ii)
all upgrades, add-ons and additions incorporated therein or affixed thereto to
the extent they have been purchased by MUSL under this Agreement.

         "Funding Commitment" - a notice to TSFC from MUSL in the form of
Exhibit E.

         "Guaranty" - a guaranty, in the form of the guaranty (or such other
form as requested by MUSL) which comprises a part of Exhibit A-1, executed and
delivered by a corporation, firm or other person (a "Guarantor") satisfactory to
MUSL, assigned to MUSL as security by the execution and delivery by TSFC of an
Assignment and Bill of Sale specifically describing such guaranty.

         "Late Payment Rate" - with respect to a Purchase - two percent (2%)
over the applicable Rate.

         "Lease" - an Eligible Lease duly executed by the Lessee, approved by
MUSL and purchased by and assigned to MUSL hereunder.
 
         "Lessee" - a United States-domiciled corporation, partnership or sole
proprietorship that is the obligor for payment of Rent under a Lease.

         "Name" - "Triad System Financial Corporation."

         "Operating Agreement" - the Operating and Support Agreement dated as of
February 1, 1999 among CCI, TSFC, and MUSL, in the form of Exhibit "B" attached
hereto.

         "Operative Documents" - this Agreement, each Assignment and Bill of
Sale and the Operating Agreement.


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         "Proposal" - the offer to a prospective lessee developed by TSFC and
MUSL as provided in Section 3.1.

         "Purchase" -With respect to a Lease and the related Equipment, the
payment by MUSL of the Purchase Price thereof and the execution and delivery of
the Assignment and Bill of Sale by TSFC therefor.

         "Purchase Price" - of a Lease and related Equipment at the time a
Purchase is made - each payment of Rent remaining unpaid under the Lease at that
time (but excluding any past due Rent), discounted from the date each such
payment is due to such time at the Rate.

         "Rate" - with respect to a Purchase - will be that rate determined by
mutual agreement of TSFC and MUSL with respect to such Purchase.

         "Rent" - under a Lease, the periodic charges specified in the Lease for
the use of the Equipment, excluding casualty or early termination, purchase
option and indemnity payments and any amounts a Lessee may be required to pay
for taxes, license fees, assessments or maintenance.

         "Repurchase Amount" - with respect to any Lease and related Equipment,
an amount equal to the sum of (i) all then due and unpaid Rent under such Lease
together with any interest or other amount due thereon at the Late Payment Rate;
(ii) all Rent not then due discount to the date of repurchase at the Rate; and
(iii) any other amounts due MUSL under such Lease, including sales, use, or
property taxes.

         "Repurchase Date" - with respect to any Purchase - the twentieth day of
each calendar month, commencing with the first such day to occur after the
Closing Date for such Purchase.

         "Tradestyle" -"TSFC."
 
         "CCI" - Cooperative Computing, Inc., a Delaware corporation formerly
known as Triad Systems Corporation, or any successor entity resulting from the
sale or transfer of the stock of Cooperative Computing, Inc. to another
corporation as a result of the merger, acquisition, consolidation, or
dissolution of Cooperative Computing, Inc. or resulting from the transfer of all
or substantially all of the assets of Cooperative Computing, Inc.

         2. THE COMMITMENT

              2.1 Total Commitment. Subject to the terms and conditions hereof,
from time to time, from (and including) the Effective Date to and excluding the
Anniversary Date (unless extended by MUSL and TSFC), MUSL 


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may make Purchases from TSFC with aggregate Purchase Prices not to exceed
$15,000,000.00; provided that neither TSFC or CCI suffers a material adverse
change in its business, condition (financial or other), performance, operations,
properties or prospects or in its ability to perform its obligations under the
Operative Documents to which it is a party or the Leases.

              2.2 Payments. MUSL shall pay the Purchase Prices of the Purchases
and any other payment due under this Agreement in immediately available funds on
the Closing Dates for such Purchases. TSFC shall make any payment due under this
Agreement to MUSL or its assignee in immediately available funds to the account
or address specified by MUSL or such assignee.

         3. THE PURCHASES

              3.1 Proposal. When TSFC has identified a customer who would be
interested in considering a Lease, TSFC will advise MUSL in writing of such
customer, the type of contract desired and the terms on which such customer has
indicated an interest, including any terms and conditions at material variance
with the terms and conditions of an Eligible Lease to the extent such material
variances may be known to TSFC. MUSL will conduct a preliminary review of the
proposed transaction terms and within 24 hours thereafter will issue a written
quote to TSFC for the transaction. If TSFC determines that the quote is
acceptable, it will so advise MUSL, and TSFC and MUSL will together develop a
proposal for the transaction to submit to the customer (a "Proposal").

              3.2 Credit Application and Approval. Upon receipt of acceptance of
a Proposal by a Lessee, TSFC will gather the information pertaining to such
Lessee and the transaction required by the Credit Application and forward it to
MUSL. TSFC will not be responsible for the accuracy or completeness of such
information, but it will forward to MUSL all such information it receives. Upon
receipt of a Credit Application and related information, MUSL shall promptly
conduct such credit investigation and financial analysis of the proposed
transaction and Lessee as it shall deem necessary. MUSL will use its best
efforts to inform TSFC of its approval or rejection of the proposed transaction
within 10 Business Days from the date of MUSL's receipt of all the information
set forth on the Credit Application. If, in a given instance, MUSL requires
additional time to complete its analysis, MUSL will so advise TSFC prior to the
end of the applicable period, whereupon TSFC may, in its sole discretion, grant
or deny such additional time. TSFC shall cooperate with and use reasonable
efforts to obtain promptly from the Lessee such additional credit information as
MUSL shall reasonably request.

              3.3 Funding Commitment. If MUSL approves a transaction with a
Lessee, it will issue a funding commitment, the form of which is attached hereto
as Exhibit E (a "Funding Commitment"), with respect to such transaction. A


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Funding Commitment shall be effective for 180 days from the date of its
issuance, unless otherwise specified therein. Unless otherwise stated in the
Funding Commitment, MUSL will finance a given transaction at the lease rate
applicable as of the date of the Funding Commitment, adjusted as therein
provided for changes in interest rate. In addition, the Funding Commitment shall
specify:

              (i)   the terms of the Lease (including any nonstandard terms and
                    conditions);
              (ii)  the Equipment subject to the Lease;
              (iii) the Purchase Price of the Equipment;
              (iv)  the required documentation for completion of the
                    transaction; and
              (v)   any other special conditions or terms MUSL may require for
                    funding the transaction.

              3.4 Cancellation of a Funding Commitment. MUSL reserves the right
to cancel a Funding Commitment at any time prior to the funding thereof if MUSL
determines, in its sole discretion, that any one or more of the following has
occurred:

              (i)   any representation made in the related Credit Application
                    (inclusive of all financial information) submitted is false
                    or misleading in any material respect;

              (ii)  an event has occurred or a condition or circumstance has
                    arisen which, in its judgment, could result in a material
                    adverse change in the business, condition (financial or
                    otherwise), performance, operations, properties or prospects
                    of Lessee or which, in its judgment, could impair in any
                    material respect Lessee's ability to perform its obligations
                    under the Lease or any guarantor under any related Guaranty;

              (iii) an existing account of Lessee with MUSL has become past due
                    in payments owed, which past due payments are material in
                    amount; or

              (iv)  an event has occurred which would constitute a default under
                    this Agreement or the Lease or any related Guaranty.

MUSL shall provide written notice to TSFC of any cancellation of a Funding
Commitment.

              3.5 Funding. In aggregate Purchase Prices of not less than
$100,000, but in any event, at least quarterly, MUSL shall close Purchases and
make payment of Purchase Prices for which Funding Commitments are outstanding
and for which the applicable conditions of Section 5.3 have been fulfilled.


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              3.6 Notice to Lessees; Billing. MUSL shall direct the Lessee under
each Lease to send all Rent and other amounts due thereunder addressed to TSFC,
directly to a lockbox or post office box designated by MUSL and under MUSL's
control. If TSFC subsequently receives a payment of Rent on account of a Lease
or other amount due thereunder, TSFC agrees to hold the amount in trust for MUSL
and immediately forward it to MUSL. If MUSL receives a payment from a Lessee for
support, maintenance or other amounts not financed by MUSL hereunder under a
Lease, MUSL agrees to hold the amount in trust for TSFC and immediately forward
it to TSFC. TSFC hereby authorizes MUSL, in the Name and Tradestyle, or
otherwise, to take any and all actions provided for in subparagraphs (a) through
(f) below with respect to each Lease from the date the Purchase Price therefor
is paid. TSFC will furnish to MUSL the account information MUSL needs to
administer each Lease. TSFC irrevocably appoints MUSL as its agent and
attorney-in-fact to perform all aspects of billing, collection, administration
and enforcement of each Lease pursuant to this Agreement. TSFC will cooperate
with MUSL in taking such actions as may be necessary or appropriate to enable
MUSL to process and deposit checks, drafts, bills of exchange, orders and other
instruments received and wire transfers of funds made pursuant to the Leases and
otherwise to carry out MUSL's rights and responsibilities under this Agreement
using the Name and Tradestyle.

                   (a)  to endorse or sign TSFC's name on all checks,
                        collections, receipts, UCC's or other documents related
                        to the Leases;

                   (b)  to take possession of and open mail addressed to TSFC
                        relating to such collection and remove Rent and proceeds
                        and products of the Lease and related Equipment;

                   (c)  to ask, demand, collect, receive, sue for, compound and
                        give acquittance for any and all payments assigned
                        hereunder;

                   (d)  to settle, adjust or compromise any claim thereunder as
                        fully as TSFC could itself;

                   (e)  to endorse its name on all checks and other commercial
                        paper given in payment or in part payment thereof; and

                   (f)  in its discretion, to file any claim or take any other
                        action or proceeding, either in Lender's own name or in
                        TSFC's name or otherwise, that Lender may deem necessary
                        or appropriate to collect any and all sums that may be
                        or become due or payable under the Leases or that may be


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                        necessary or appropriate to protect the right, title and
                        interest of Lender in and to the Leases and related
                        Equipment.

              3.7 Reports. MUSL will provide TSFC with periodic reports relative
to the Leases in a form and at times mutually agreed upon by TSFC and MUSL
(including a monthly report containing aging information pertaining to open
accounts under such Leases).

              3.8 License. TSFC hereby grants to MUSL, and MUSL hereby accepts,
the nonexclusive, nontransferable, terminable right and license, to use the Name
and Tradestyle upon the terms and conditions set forth herein, solely in
connection with the billing, collection, administration, and enforcement of
Leases pursuant to this Agreement. Nothing in this Agreement shall be construed
as conveying to MUSL any right, title or interest in the Name and Tradestyle or
any trademarks, service marks or other intellectual property of TSFC.

              3.9 Default by Lessees. If there shall occur a default by a Lessee
under a Lease, and MUSL has determined to commence the exercise of remedies
thereunder, MUSL shall give notice thereof (an "Enforcement Notice") to TSFC.
Thereupon TSFC shall have the option to either (i) purchase the Lease and
related Equipment on the Repurchase Date next occurring after receipt of such
notice by paying to MUSL the Repurchase Amount with respect to such Lease and
related Equipment or (ii) allow MUSL to proceed with the exercise of remedies in
connection with such default under the Lease, in MUSL's name (including
completing and delivering to the Lessee the Notice of Assignment received by
MUSL from TSFC pursuant to Section 5.3 (f)) and in accordance the collection and
enforcement procedures deemed appropriate by MUSL. In the event TSFC does not
repurchase a defaulted Lease and related Equipment, TSFC will cooperate with
MUSL in pursuing its collection and enforcement procedures and exercising its
remedies as provided hereunder, and, at MUSL's request, will cease providing
support services to a defaulted Lessee with respect to the leased Equipment
until such time as MUSL requests such services to be continued with respect to
such Equipment.

              3.10 Upgrades and Additions. TSFC may, from time to time, agree
with a Lessee under a Lease that the Equipment subject to such Lease shall be
upgraded or that additional Eligible Equipment should be added to such Lease. If
TSFC and such Lessee agree to amend such Lease to increase the Rent payable
thereunder in consideration of such upgrade or addition, TSFC may 


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request that MUSL purchase the upgrade or addition covered by such amendment (
the "Lease Amendment"). Not later than ten (10) Business Days after such
request, MUSL shall give TSFC written advice as to whether MUSL, in its sole
discretion, has elected to purchase such upgrade or addition. If MUSL fails to
give such advice within such ten (10) day period, MUSL shall be deemed to have
declined to purchase such upgrade or addition. If MUSL agrees to purchase such
upgrade or addition, MUSL shall, subject to satisfaction of the conditions
precedent set forth in Sections 4 and 5, Purchase Price therefor in an amount
equal to the aggregate increase in Rent effected by the Lease Amendment which
remains unpaid as of the applicable Closing Date, but excluding any such
increase in Rent which is past due, discounted at the Rate mutually agreed to by
MUSL and TSFC. The Closing Date with respect to such Purchase shall be a date
agreed upon in writing by MUSL and TSFC. If MUSL agrees to make such a Purchase,
the Lease Amendment shall be considered a "Lease" for all purposes of this
Agreement (including, without limitation, Section 5).

              3.11 Optional Prepayment: MUSL Refusal to Purchase Upgrades or
Additions. If MUSL elects not to purchase an upgrade or addition pursuant to
Section 3.10, TSFC may give MUSL not less than ten (10) days prior written
notice of its intention to repurchase the Lease and related Equipment in respect
of which an upgrade or addition has been made. On the first Repurchase Date to
occur after the ten (10) day notice period has elapsed, TSFC shall pay to MUSL
the Repurchase Amount with respect to such Lease.

              3.12 No Other Repurchase Permitted. No Lease and related Equipment
may be repurchased for any reason except as otherwise expressly provided in the
Agreement.

       4. CONDITIONS PRECEDENT TO THE INITIAL PURCHASE

              MUSL will not make the initial Purchase hereunder until it has
received all of the following, in form and substance satisfactory to MUSL:

              4.1 Evidence of Authority of TSFC. Certified resolutions of the
Board of Directors of TSFC authorizing the execution, delivery and performance
of each of the Operative Documents to which it is a party and any other document
required hereunder together with an incumbency certificate with respect to the 
officer or officers of TSFC executing any of such Operative Documents and any 
document required hereunder.

              4.2 Evidence of Authority of CCI. Certified resolutions of the
Board of Directors of CCI authorizing the execution, delivery and performance of
the Operating Agreement and any other document required thereunder together 

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with an incumbency certificate with respect to the officer or officers of CCI
executing the Operating Agreement and any document required thereunder.

              4.3 Operating Agreement. The Operating Agreement, duly executed by
CCI, TSFC, and MUSL.

              4.4 Financial Statements. The most recent consolidated financial
statements of Cooperative Computing Holding Company, Inc., which include the
operating results of CCI and TSFC.

              4.5 TSFC Officer's Certificate. A certificate from a duly
authorized officer of TSFC, dated as of the first Closing Date, stating that:

                   (a)  all representations and warranties made by TSFC under
                        this Agreement and under the Operating Agreement are
                        true and correct as of the date of the certificate;

                   (b)  TSFC is in compliance with all covenants made under this
                        Agreement; and

                   (c)  no event has occurred and is continuing that is, or with
                        the passage of time or giving of notice or both would
                        be, an event of default or a default under or breach of
                        the Operating Agreement; and

                   (d)  containing an express undertaking by TSFC to give
                        immediate notice to MUSL if at any time any of the above
                        statements are no longer true.

              4.6 CCI Officer's Certificate. A certificate from a duly
authorized officer of CCI, dated as of the first Closing Date, stating that:

                   (a)  all representations and warranties made by CCI under the
                        Operating Agreement are true and correct as of the date
                        of the certificate;

                   (b)  CCI is in compliance with all covenants made under the
                        Operating Agreement;

                   (c)  no event has occurred and is continuing that is, or with
                        the passage of time or giving of notice or both would
                        be, a default under or breach of the Operating
                        Agreement; and


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                   (d)  containing an express undertaking by CCI to give
                        immediate written notice to MUSL if at any time any of
                        the above statements is no longer true.

 
              5. CONDITIONS PRECEDENT TO ALL PURCHASES

              MUSL will not make any Purchase hereunder (including the initial
Purchase) unless on the date thereof:

              5.1 Notice. TSFC shall have given MUSL verbal notice of each
Closing Date no later than five (5) Business Days prior to such Closing Date.

              5.2 Operating Agreement. The Operating Agreement shall be in full
force and effect and no defaults or breaches shall exist thereunder as of the
applicable Closing Date.

              5.3 Receipt of Certain Documents. MUSL shall have received the
following, in form and substance satisfactory to MUSL:

                   a)   Lease. (i) A signed fax copy or original, manually
                        executed counterparts in the possession of CCI or TSFC
                        on such Closing Date of each Lease financed on such
                        Closing Date and the related Lease Schedule
                        substantially in the form contained in Exhibit "A-1", in
                        each case duly executed by TSFC as lessor and by the
                        Lessee thereunder;

                   (b)  Guaranty. If required by MUSL, signed fax copy or
                        original, manually executed counterparts in the
                        possession of CCI or TSFC on such Closing Date of each
                        Guaranty duly executed by the Guarantor;

                   (c)  Financing Statements Filed Against Lessees. Either
                        evidence of electronic filing receipts, a search report
                        from Dun & Bradstreet listing, among other things,
                        filing numbers and filing dates or copy of duly executed
                        and filed Uniform Commercial Code financing statements
                        on form UCC-1 naming TSFC as secured party and the
                        Lessees under the Leases to be financed on the Closing
                        Date as debtors, identifying as collateral the Equipment
                        subject to such Leases.


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                   (d)  Assignment and Bill of Sale. An Assignment and Bill of
                        Sale, in the form of Exhibit C, or other form
                        satisfactory to MUSL, duly executed by TSFC relating to
                        and describing the Lease, and Guaranty and the Equipment
                        covered thereby;

                   (f)  Notice of Assignment. An original notice to the relevant
                        Lessee of the assignment to MUSL of the relevant Lease,
                        signed by TSFC, substantially in the form of Exhibit
                        "F";

                   (g)  Acceptance Supplement. A copy of the original executed
                        counterpart of the delivery and acceptance certificate
                        with respect to each Lease containing a complete
                        description of the Equipment, duly executed by the
                        Lessee thereunder; and

                   (h)  Releases. Releases in form and substance reasonably
                        acceptable to MUSL executed by secured lenders, if any,
                        of TSFC having a security interest in the Lease and
                        related Equipment.

                   (i)  Other Documents. Such other documents, instruments or
                        agreements as MUSL may reasonably request.


              5.4 No Obligations Assumed by MUSL. Except for TSFC's obligation
to permit lessee's quiet enjoyment of the Equipment subject to the Lease so long
as no event of default or breach of Lease has occurred and is continuing, MUSL
does not assume, and its interest herein shall not be subject to, any
obligations or liabilities of TSFC under any Lease or any duty to collect money
due thereunder or to enforce collection thereof. MUSL assumes no responsibility,
obligation or liability for any representation, warranty or obligation, express
or implied, made by any agent or employee of TSFC to a Lessee in connection with
any Lease.

              6. INDEMNITIES

              6.1 Indemnities. Notwithstanding anything set forth herein, TSFC
shall indemnify, protect and defend MUSL and hold it safe and harmless from and
against any and all losses, claims, demands, penalties, actions, suits,
proceedings, costs, expenses (including reasonable attorneys' fees), damages and
liabilities ("Indemnified Amount") (other than Indemnified Amounts arising from
or pertaining to the gross negligence or willful misconduct by MUSL) that


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may at any time be made, brought, incurred, assessed or adjudged against MUSL
arising from or pertaining to:

                   (a)  the manufacture, purchase, license, subscription,
                        financing, ownership, delivery, rejection, nondelivery,
                        possession, use, operation, maintenance, or repair of
                        the Equipment and in the event TSFC agrees to remarket
                        any Equipment pursuant to Section 8, then with respect
                        such Equipment, any dismantling, transportation,
                        storage, return or other disposition thereof performed
                        by TSFC or at its direction;

                   (b)  breach of any covenant or warranty made by TSFC or CCI
                        relating to any Equipment or Lease or maintenance of any
                        Equipment, including qualification of any Equipment for
                        any tax benefit;

                   (c)  any claim, action or proceeding involving patent or
                        trademark infringement or copyright or trade secret
                        violations relating to the Equipment (including any
                        interest or penalty) whether or not such claim, action
                        or proceeding involves a claim of infringement or a
                        combination or design patent;

                   (d)  failure of MUSL, for whatever reason, to have obtained a
                        first priority perfected purchase money security
                        interest in and lien on the Equipment in the event the
                        Equipment is deemed to be an asset of a Lessee as the
                        result of a Lease being held to be a security agreement
                        rather than a true lease regardless of whether of not
                        Uniform Commercial Code financing statements on form
                        UCC-1 were filed against a Lessee with respect to the
                        Equipment under Section 5.3 (c);

                   (e)  any misrepresentation made by any agent or employee of
                        TSFC, or CCI in the course of negotiations regarding any
                        Lease or Equipment;

                   (f)  any breach of any warranty or covenant, or any
                        misrepresentation, of TSFC, or CCI in any Lease, any
                        Operative Document or any certificate of an officer of
                        TSFC, or CCI delivered in accordance therewith;

                   (g)  failure of any lease or Equipment to comply with
                        applicable laws, regulations or contractual


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                        specifications or warranties, or to be an Eligible Lease
                        or Eligible Equipment, as the case may be;

                   (h)  any dispute, claim, offset, or defense of any Lessee
                        (other than payment by, or discharge in bankruptcy of,
                        such Lessee) to the payment of any Rent;

                   (i)  MUSL having received from TSFC only a fax copy (rather
                        that the original, manually executed copy) of any Lease
                        or any Guaranty;

                   (j)  failure of TSFC or CCI to pay when due any taxes for
                        which it is liable; and

                   (j)  any wrongful or negligent acts or omissions of TSFC, its
                        agents or assigns, in carrying out TSFC's obligations,
                        if any, under Section 8.

              TSFC shall assume, at its expense, full responsibility for the
defense and satisfaction of the foregoing, with counsel reasonably satisfactory
to MUSL. All of the indemnities set forth in this Section 6.1 shall survive the
cancellation or termination of this Agreement.

              6.2 Indemnity Payment. Upon the occurrence of any of the events
set forth in Section 6.1, TSFC unconditionally agrees to pay MUSL, upon written
demand, the Indemnified Amount.

 

              7. REPRESENTATIONS, WARRANTIES AND COVENANTS

              TSFC represents, warrants and covenants that:

              7.1 Due Organization. It is a corporation duly organized and
validly existing in good standing under the laws of California, and is duly
qualified or otherwise authorized to do business wherever necessary to carry on
its present business and operations and to perform its respective obligations
under each Operative Document and each Lease.

              7.2 Authority. It has the full power, authority and legal right to
enter into and perform its obligations under each Operative Document.

              7.3 Principal Place of Business. Its chief executive office is in
Livermore, California, and the office where it maintains its records concerning


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payments under leases is in Austin, Texas, and it will not change such principal
place of business or remove from such place where it maintains its records, such
records or any other records relating to the Leases or related Equipment, or
change its name, identity or corporate structure, without at least thirty (30)
days prior written notice to Lender.

              7.4 Binding Obligations. Each Operative Document has been duly
authorized and upon execution and delivery will constitute legal, valid and
binding obligations, enforceable against it in accordance with the terms
thereof.

              7.5 Approvals and Consents. No stockholder approval, or approval
or consent of any trustee or holder of any indebtedness or obligation, or
authorization, consent, approval or license by, exemption from or registration
with, any court or governmental department, commission, board, agency or
instrumentality, domestic or foreign, is necessary in connection with the
execution, delivery and performance of its obligations under the Operative
Documents, and no consent of any owner, lessor or mortgagee of premises where
any Equipment is located is needed to permit MUSL or TSFC to enforce the rights
of the lessor under the Leases or, if required, the same have been obtained and
certified copies have been delivered to MUSL.

              7.6 Compliance with Laws. There is no law, governmental rule,
regulation, judgment, decree or order binding on it that would be contravened by
the execution and delivery of, and performance under, the Operative Documents.
It will at all times comply with, or cause to be complied with, all laws,
statutes, rules, regulations, orders and directions of any governmental
authority having jurisdiction over it or its business if not complied with,
would have a material adverse effect on TSFC's business, condition (financial or
other), performance, operations, properties or prospects or on its ability to
perform its obligations under the Operative Documents or the Leases.

              7.7 Clear Ownership. On the Closing Date, it is the record and
beneficial owner of 100% of each Lease and all Equipment subject to Leases in
which it is named as Lessor free and clear to all mortgages, deeds of trust,
pledges and other liens, security interests, charges or encumbrances, except for
liens for taxes due but not yet payable and shall promptly deliver to MUSL any
executed counterparts of Leases which were not delivered to MUSL pursuant to
Section 5.3(a) and which have subsequently come into its or CCI's possession.

              7.8 Filings. The Uniform Commercial Code filings made against the
Lessee and assigned in favor of MUSL create a valid and perfected first priority
security interest in the Equipment.


                                       15
<PAGE>   17
              7.9 Actions. There are no actions, suits, proceedings, claims or
disputes pending or, to its knowledge, threatened against or affecting it or its
properties before any court or governmental department, commission, board,
bureau, agency or instrumentality, domestic or foreign, that, if determined
adversely to it, would have a material adverse effect on its business, condition
(financial or other), performance, operations, properties or prospects, its
ability to perform its obligations under the Operative Documents or the Leases.

              7.10 Payment of Taxes. It has filed and will file all tax returns
(federal, state and local) required to be filed and has paid all taxes shown
thereon to be due, including interest and penalties, unless it is contesting the
payment of certain taxes in good faith and has established adequate reserves
therefor.

              7.11 Notices. It will send to MUSL copies of all significant
notices received by it, including, but not limited to, any notices with respect
to the terms of any Lease, and other instruments or communications required or
permitted to be given by the Lessee under any Lease.

              7.12 Further Assurances; Enforcement of Leases. It will: (a)
preserve and maintain its corporate existence and all rights, privileges and
franchises now enjoyed and conduct its business in an orderly, efficient and
customary manner; and (b) from time to time, at its own expense, take all
actions reasonably necessary to establish, preserve, protect and perfect the
rights created by this Agreement, including, without limitation, (i) the full
and punctual performance of all of its obligations under the Leases; and (ii)
the exercise of any and all rights of the lessor under the Leases as may be
requested by MUSL in connection with its administration of the Leases to assure
full compliance with the terms and provisions thereof and to protect MUSL's
interest in the Leases and related Equipment.

              7.13 Validity and Enforceability of Leases and Guaranties. Each
Eligible Lease and Guaranty submitted to MUSL pursuant to Section 5.3 is genuine
and valid and is not subject to any offset, deduction, counterclaim or lien.

              7.14 Leases Duly Entered Into. All parties to each Lease and
Guaranty have full power, authority and legal right to enter into and perform
its obligations under such Lease or Guaranty, as the case may be and each Lease
and Guaranty will be duly authorized, executed and delivered by the parties
thereto; provided, however, TSFC shall not make the foregoing representation and
warranty with respect to each Lease and Guaranty for which TSFC submits pursuant
to Section 5.3 a duly executed incumbency certificate and certified corporate
resolutions in form and substance satisfactory to MUSL. Each Lease and Guaranty
will constitute legal, valid and binding obligations of the parties


                                       16
<PAGE>   18
thereto and will be enforceable in accordance with their respective terms and
will be in full force and effect on the Closing Date relating thereto, and no
default thereunder shall exist on such Closing Date. The entire agreement with
each Lessee is embodied solely in the executed counterparts of the applicable
Lease and other documentation furnished to MUSL with respect to such Lease.

              7.15 Equipment Description Each Lease describes the Equipment
leased to the Lessee named in such Lease, the Rent required for such Equipment
and any applicable early termination payments.

              7.16 Leases Comply with Laws. Each Lease complies with and does
not violate applicable laws, regulations or contractual specifications or
warranties, including without limitation, any applicable laws relating to
maximum rates of interest (whether or not imputed) or similar charges and all
required disclosures have been made with respect thereto under federal
truth-in-lending and truth-in-leasing regulations to the extent applicable.

              7.17 No Impairment of Value or Rights. It will not do anything
that might impair the value of any Lease or Equipment or any of the rights or
obligations of the parties hereto under any Lease.

              7.18 No Lessor Liens; Good Title. No Lease submitted to MUSL
pursuant to Section 5.3, or any Equipment subject thereto, or any other of its
rights therein, has been assigned to, or shall be subject to, any lien or
security interest in favor of, any person other than MUSL. TSFC has and conveys,
assigns, transfers and sells to MUSL with respect to each Lease and the
Equipment purchased hereunder, good and marketable title, free and clear of all
liens, encumbrances or security interests except the interest of Lessee as
lessee under the Lease. TSFC MAKES NO WARRANTY EXPRESS OR IMPLIED AS TO THE
EQUIPMENT'S MERCHANTABILITY OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.

              7.19 Notifications. It will promptly notify MUSL of:

                   (a)  any event of default or event which, upon the lapse of
                        time or giving of notice, or both, would become an event
                        of default, or any event which is, or upon the lapse of
                        time or giving of notice, or both, would become a
                        default under or breach of the Operating Agreement;

                   (b)  any and all litigation or other matters or events
                        concerning it or any Lessee that has a reasonable
                        possibility of materially and adversely affecting its or
                        any Lessee's business, condition (financial or other),
                        performance, operations, properties or prospects or


                                       17
<PAGE>   19
                        adversely affecting MUSL's interest in the Lease or
                        related Equipment.

              7.20 Books and Records Financial and Other Information. It shall:

                   (a)  maintain adequate books, accounts and records and
                        prepare all financial statements required hereunder in
                        accordance with generally accepted accounting principles
                        and practices consistently applied and in compliance
                        with the regulations of any governmental regulatory body
                        having jurisdiction over it;

                   (b)  give MUSL and its representatives, at all reasonable
                        times and upon reasonable notice, access to all records,
                        files and books of accounting pertaining to all
                        transactions subject to this Agreement, and permit MUSL
                        and its representatives to inspect, audit and make
                        extracts therefrom;

                   (c)  upon the occurrence of an event of default or an event
                        which, upon the lapse of time or giving of notice, or
                        both, would become an event of default, permit MUSL to
                        exercise the inspection rights of TSFC under the Leases,
                        on a non-exclusive basis.


MUSL represents, warrants and covenants that:

              7.21 Due Organization. It is a corporation duly organized and
validly existing in good standing under the laws of Pennsylvania, and is duly
qualified or otherwise authorized to do business wherever necessary to carry on
its present business and operations and to perform its respective obligations
under each Operative Document and each Lease.

              7.22 Authority. It has the full power, authority and legal right
to enter into and perform its obligations under each Operative Document.

              7.23 Binding Obligations. Each Operative Document has been duly
authorized and upon execution and delivery will constitute legal, valid and
binding obligations, enforceable against it in accordance with the terms
thereof.

              7.24 Approvals and Consents. No stockholder approval, or approval
or consent of any trustee or holder of any indebtedness or obligation, or
authorization, consent, approval or license by, exemption from or registration


                                       18
<PAGE>   20
with, any court or governmental department, commission, board, agency or
instrumentality, domestic or foreign, is necessary in connection with the
execution, delivery and performance of its obligations under the Operative
Documents.

              7.25 Payment of Taxes. On and after the financing of a Lease and
Equipment hereunder, it will file all sale, use and property tax returns
required to be filed by it thereon and will pay all taxes shown thereon to be
due, including interest and penalties, unless it is contesting the payment of
certain taxes in good faith and has established adequate reserves therefor.

              8. REPOSSESSION AND REMARKETING

              8.1 Request to Repossess; Remarketing. Upon MUSL's determination
that a default exists under a Lease and that such default remains uncured within
the time, if any, for curing the same permitted by the Lease, MUSL may request
TSFC to act, on terms and conditions acceptable to TSFC, as MUSL's agent to use
diligent efforts to repossess the Equipment subject to such Lease as promptly
and efficiently as is legally permissible and to thereafter to repair, service,
refurbish and update, as needed, and attempt to sell or re-lease such Equipment
on a non-priority (but non-discriminatory) basis and on such terms and
conditions as reflect fair market value for similar equipment and are acceptable
to MUSL, in its sole discretion. TSFC shall promptly respond to MUSL's request
setting forth such terms and conditions.

              9. MISCELLANEOUS

              9.1 General. Waiver of any particular right or provision shall not
be a waiver of any other right or provision. The parties' rights are cumulative
and not alternative. No waiver or change, modification or amendment in this
Agreement shall bind MUSL or TSFC unless an officer of MUSL and TSFC, has agreed
to such waiver or change, modification or amendment in writing. Any provision of
this Agreement contrary to, prohibited by or invalid under applicable laws or
regulations shall be inapplicable and deemed omitted herefrom, but shall not
invalidate the remaining provisions hereof. No oral agreement, guaranty or
warranty shall be binding. This Agreement shall be governed by the laws of
California.

              9.2 Notices. All notices, demands, directions, consents and
approvals hereunder shall be in writing and shall be delivered in person, by
telecopy, by overnight courier or by prepaid certified mail, addressed to the
party for whom it is intended, if to

                  Triad Systems Financial Corporation
                  3055 Triad Drive


                                       19
<PAGE>   21
                  Livermore, CA 94550
                  Attn: Bill Allen, President
                  Telecopy: 925 455 6917

                  With copy to:

                  Cooperative Computing, Inc.
                  6207 Bee Cave Road
                  Austin TX 78746-5146
                  Attn: Walter Earl Bissex
                  Telecopy: 512 347 9914


 
 
and if to

                           Mellon US Leasing, a Division of
                           Mellon Leasing Corporation
                           525 Market Street, Suite 3500
                           San Francisco, California 94105
                           Attention: President
                           Telecopy No.: 415/538-9611

and shall be deemed delivered on the day of actual receipt. Either party may
change its address for the receipt of notices, demands, directions, consents,
and approvals by notice duly given to the other party pursuant to this Section
9.2.

              Notices may also effectively be given by transmitting over
electronic devices such as facsimile machine, if either party to whom such
notice is being sent has such device in its office. Notices given by electronic
transmitting devices shall be deemed effective on the date of transmission.

              9.3 Waivers. TSFC hereby waives demand, presentment, protest and
notice thereof with respect to any and all instruments, notice of acceptance
hereof, and all other demands and notices of any description, except as
expressly provided herein. No delay or omissions on the part of either party in
exercising any right, remedy, option, or notice of default, except as any
pertinent statute of limitations which may apply, on any one occasion, shall be
construed as a bar to or waiver of any other default, right, remedy or option,
or the same default, right, remedy or option any future occasion.

              9.4 Costs and Expenses. In any case where MUSL or TSFC is entitled
hereunder to reimbursement of costs and expenses, such costs and 


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<PAGE>   22
expenses shall include interest on any judgment and court costs, reasonable
legal fees and expenses (including allocated fees of internal counsel).

              9.5 Successors; Assigns. This Agreement shall inure to the benefit
of and be binding upon MUSL and TSFC and their respective successors and
permitted assigns. Neither party may assign this Agreement without the other
party's consent, unless such assignment is to any wholly owned subsidiary,
parent or affiliate of the assigning party. If either party does not consent to
such proposed assignment, TSFC shall have the option to prepay the outstanding
aggregate Purchase Repayment Amount to MUSL at a price to be determined by
mutual agreement of the parties.
 
              9.6 Entire Agreement. The terms and conditions herein contained
constitute the entire agreement between MUSL and TSFC with respect to the
subject matter hereof, except to the extent other agreements are referred to
herein or contemplated hereby or executed contemporaneously herewith, and
supersede all previous communications whether oral or written between MUSL and
TSFC with respect to such subject matter. No agreement or understanding varying
or extending any rights or obligations hereunder of either of the parties shall
be binding unless in a writing signed by a duly authorized officer or
representative of the party against which such variance or extension is sought
to be enforced.

              9.7 Headings; Titles. The cover and titles for Sections used in
this Agreement are intended to be descriptive only and shall not be deemed to
limit, extend or in any way modify the meaning of the text of this Agreement.
 
              IN WITNESS WHEREOF, the parties hereto have caused this Agreement
to be duly executed by their officers thereunto duly authorized as of the day
and year first above written.

TRIAD SYSTEMS FINANCIAL CORPORATION,
a California corporation

By: _______________________________
      Its: Authorized Signatory

MELLON US LEASING, A DIVISION OF
MELLON LEASING CORPORATION,
a Pennsylvania corporation

By: ________________________________
      Its: Authorized Signatory


                                       21
<PAGE>   23
Exhibits

A.       Eligible Lease, Guaranty
B.       Operating Agreement
C.       Assignment and Bill of Sale
D.       Credit Application
E.       Funding Commitment
F.       Notice of Assignment


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