Document:

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                                                                    Exhibit 10-N

                                             April 12, 2004

Mr. William J. Carroll
418 Riverside Drive
Rossford, OH  43640

Dear Bill:

         This letter, when executed by both parties, shall constitute an
Agreement between Dana Corporation ("Dana") and you regarding monies, benefits
and other consideration that will be paid to you in connection with your
retirement from employment at Dana and in return for the obligations you have
assumed hereunder.

(1)      Mutual Agreement. We both agree that for purposes of calculating your
         benefits under all Dana benefit, retirement and compensation plans,
         your retirement date from Dana will be deemed to be April 1, 2004.

(2)      Dana's Payments. Dana will make payment to you of consideration in the
         aggregate amount of $933,000 to be paid in three (3) equal cash
         installments.

         The first installment will be paid within 30 days after the execution
         of this Agreement. The second installment will be paid no later than
         August 31, 2004, and the third and final installment will be paid no
         later than November 30, 2004.

         In the event of your death after the date of execution of this
         Agreement but before all three payments have been received, your
         surviving spouse (or if you have no surviving spouse, your estate)
         shall be entitled to receive a lump sum benefit equal to the amount of
         the aggregate payment that remains unpaid as of the date of your death.

(3)      Payment Is in Addition to Plan Benefits. The payment described in
         Paragraph (2) above shall be in addition to any benefits to which you
         are entitled as a retiree pursuant to the provisions of any Dana
         retirement, benefit or compensation plan, including, without
         limitation, the Dana Corporation Retirement Plan ("CashPlus"), the Dana
         Corporation Savings and Investment Plan, the Excess Benefits Plan, the
         1999 Restricted Stock Plan, the Supplemental Benefits Plan, the Stock
         Incentive Plan and Additional Compensation Plan.

(4)      Taxes. It is anticipated that the payment described in Paragraph (2)
         above will not be subject to withholding of taxes of any kind and that
         a Form 1099 will be issued

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         for these payments. Dana, however, reserves the right to withhold taxes
         in the event that tax counsel of Dana's choosing should provide Dana
         with a legal opinion that such withholdings are required by any
         applicable law. Notwithstanding the foregoing, and regardless of
         whether Dana satisfies any withholding obligations imposed upon it by
         applicable law, you (or, if applicable, your spouse or your estate)
         shall be liable for any income or other taxes imposed on any payment
         made under this Letter Agreement.

(5)      Unfunded Obligation. The payment described in Paragraph (2) above shall
         be paid by Dana out of its general assets, and shall not be funded in
         any manner.

(6)      No Assignment. Subject to the provisions of paragraph (7), below, any
         attempt, voluntary or involuntary, to alienate or assign any benefit or
         right under this Letter Agreement, shall be null, void and of no
         effect.

(7)      Successors. This Agreement shall be binding upon and shall inure to the
         benefit of (a) you and your heirs, successors and assigns, and (b) Dana
         and any successor of Dana including, without limitation, any
         corporation or corporations acquiring directly or indirectly all or
         substantially all of the assets of Dana, whether by merger,
         consolidation, sale or otherwise, but shall not otherwise be assignable
         by Dana.

(8)      Non-Disclosure. You shall not disclose to anyone (except your spouse,
         attorney, accountant or financial planner, or as required by law) any
         information concerning the existence or details of this Agreement,
         unless such disclosure is authorized in writing by Dana or Dana has
         previously disclosed this Agreement as required by law. You further
         agree to take all reasonable precautions to protect against the
         disclosure of the details of this Agreement to any other person (except
         for your spouse, attorney, accountant or financial planner, or as
         required by law). You acknowledge and agree that Dana may make such
         disclosures of this Agreement as it may determine, in its sole
         discretion, are required by law.

(9)      Benefit Amounts Not Plan Compensation. Any amounts payable under this
         Letter Agreement shall not be deemed salary or other compensation for
         purposes of computing benefits to which you may be entitled under any
         Dana-sponsored pension or other employee benefits, retirement or
         compensation arrangement.

(10)     Non-Competition; Confidentiality; Non-Solicitation and
         Non-Disparagement. You agree that you will not, at any time prior to
         March 31, 2005, without the prior written permission of Dana, directly
         or indirectly, whether as principal, agent, stockholder, employee,
         consultant or in any other capacity, engage in or have a financial
         interest in any of the companies referenced on Attachment A hereto or
         any

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         business which is owned by or affiliated with any of them; provided,
         however, that nothing contained herein shall preclude you from the
         purchase or ownership of stock in any such business, if such stock is
         publicly traded and your holdings do not exceed 1% of the amount of
         such stock at the time issued and outstanding; and provided, further,
         that it shall not be a violation of this Paragraph (10) should these
         business entities acquire a company where you are then serving as a
         principal, agent, stockholder, employee, consultant or in any other
         capacity. Both of us agree that if, in any action before any court or
         agency legally empowered to enforce such covenants, any term,
         restriction, covenant or promise is found to be unreasonable and for
         that reason unenforceable, then such term, restriction, covenant or
         promise shall be deemed to be modified to the extent necessary to make
         it enforceable by such court or agency. You also agree not to solicit
         for employment any employee of Dana Corporation during the term of this
         agreement not to compete.

         You agree at all times to hold all Confidential information that you
         acquired during your employment with Dana in trust and confidence and
         not to discuss or reveal such Confidential information to any third
         party without the prior written consent of Dana. For purposes of this
         Agreement, Confidential Information shall mean all information with
         respect to Dana and its affiliates and their businesses (including,
         without limitation, their organization, technology, finances,
         customers, suppliers and business plans) whether or not in written or
         documented form and which is not available in the public domain.

         You further agree not at any time to disparage Dana or its affiliates
         or their respective officers and directors or otherwise make any
         statements or take any actions which would damage the goodwill or
         reputation of Dana or its affiliates, including without limitation,
         making statements to suppliers or customers of any of them which would
         damage Dana's or its affiliates' goodwill or reputation and may
         adversely affect their relationships with those entities.

         Dana agrees that its officers and directors will not at any time
         disparage you or otherwise make any statements or take any actions that
         would damage your goodwill or reputation.

         You and Dana expressly agree that upon a breach or violation of the
         foregoing restrictions in this Paragraph (10), you and Dana, in
         addition to all other remedies, shall be entitled as a matter of right
         to injunctive relief in any court of competent jurisdiction and to the
         recovery from the other party of court costs and reasonable attorneys'
         fees incurred in connection with such party's rights under this
         Paragraph (10) provided that such party prevails in such proceedings.

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         You acknowledge that you have agreed to the obligations set forth in
         this Paragraph (10) in return for the consideration set forth in this
         Agreement.

(11)     Indemnification. In the event you are a party or are threatened to be
         made a party to any threatened, pending or completed action, suit or
         proceeding by reason of the fact you were an officer or employee of
         Dana or served at the request of Dana as a director, officer, employee
         or agent of another entity, Dana will indemnify you and reimburse your
         expenses in connection with any such action, suit or proceeding to the
         same extent and subject to the same limitations as Dana would indemnify
         or reimburse the expenses of a then current officer of Dana in similar
         circumstances.

(12)     Transition Services. You agree to provide transition services to Dana,
         on an as-needed basis, during the period of April 1, 2004 through
         December 3, 2004 ("Transition Services Term"). As such, you agree to
         perform such services for Dana as may be reasonably requested by Dana,
         from time to time in connection with the management transition. With
         respect to your services, both parties agree that you will not
         ordinarily render services to Dana for more than eight (8) hours in any
         month, during this Transition Services Term. You will not be required
         to provide these services at any particular location, and you may
         provide these services at home or by telephone or mail, or by any other
         means suitable to the services requested and mutually agreeable to Dana
         and you.

         During the Transition Services Term, you will be reimbursed for
         reasonable expenses for travel deemed necessary by Dana for the
         performance of your services to Dana.

         Dana shall pay you $300 for each hour of consulting services that you
         perform for Dana during the Transition Services Term.

         During the Transition Services Term, you will not be entitled to
         participate in any company-provided group life insurance,
         hospitalization, pension, incentive, salary continuation and other
         employee benefit plans that are available to employees of Dana or its
         affiliates, provided, however, that this provision shall in no way
         alter or affect your retirement or other benefits arising solely from
         your employment with Dana prior to your retirement.

         It is agreed that during the Transition Services Term you will not be
         an agent or employee of Dana (or its affiliates), and that you will be
         engaged only in an independent contractor and consultant capacity.
         During this period, you will be providing only such advisory services
         as may be requested, and you will not be

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         subject to Dana's supervision or control. Dana will not control the
         details and means by which you perform such services under this
         Agreement.

(13)     Complete Release. In exchange for the obligations that Dana has assumed
         in this Agreement, you agree, on behalf of yourself, and on behalf of
         your heirs, successors, and assigns, to release Dana and all of its
         past, present and future owners, subsidiaries, affiliates, directors,
         officers, employees and representatives, and all of the respective
         heirs, successors, and assigns of the foregoing, and all of their
         employee benefit plans and plan administrators, from all claims,
         damages, demands and liabilities, whether heretofore asserted or not,
         that you might otherwise have, based on your employment with, or your
         retirement from Dana. This includes, but is not limited to, a release
         of rights or claims you may have under: (a) the AGE DISCRIMINATION IN
         EMPLOYMENT ACT OF 1967, as amended; (b) any and all other federal,
         state and local laws, including but not limited to, laws prohibiting
         discrimination in employment on the basis of sex, race, national
         origin, age, disability or other invidious factor; (c) any and all
         theories of contract and tort law, whether based on common law or
         otherwise and including but not limited to theories of fraud and
         estoppel; and (d) any contracts or agreements whether written or oral
         or express or implied. This release covers both claims that you know
         about and those you may not know about. This release does not include,
         however, a release of your rights, if any, to pension, retiree health
         or similar benefits under Dana's retirement, benefit or compensation
         plan in which you were participating at the date of your retirement. We
         understand that you specifically do not waive or release any rights
         that may arise after the date you sign this Agreement.

         Notwithstanding anything to the contrary in this Agreement, Executive
         is not releasing:

                  1.       Any continuing obligations or liabilities of Dana
                           created by or referenced in this Agreement, including
                           the payments to be made under Paragraph (2) and any
                           benefits to which Executive is entitled to as a
                           retiree as referenced in Paragraph (3).

                  2.       The right to be indemnified as an officer or employee
                           of Dana pursuant to the Virginia Stock Corporation
                           Act, or the Bylaws or Articles of incorporation of
                           Dana now or hereafter in existence.

                  3.       The right to enforce this Agreement.

         You further agree not to sue Dana or any of its past, present and
         future owners, subsidiaries, affiliates, directors, officers, employees
         and representatives, or any of

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         the respective heirs, successors and assigns of the foregoing, and any
         of their employee benefit plans and plan administrators, based, in
         whole or in part, on any claims related to your employment with Dana or
         the termination of that employment and your retirement.

         You acknowledge that you have been given a period of 21 days from the
         date of this Agreement to review and consider this Agreement, including
         this Paragraph (13) before signing it. You understand that you may use
         as much of this 21-day period as you wish prior to signing this
         Agreement. In addition, you are encouraged to consult with an attorney
         of your choice before signing this Agreement. You understand that
         whether you sign this Agreement is your decision.

         You may revoke your acceptance of this Agreement including the release
         language contained in this Paragraph by delivering a written notice of
         revocation to the Vice President of Human Resources for Dana, at the
         letterhead address within 7 days of signing this Agreement. If you
         revoke your acceptance of this Agreement, it shall not be effective or
         enforceable, and you will not receive the benefits described in this
         Agreement.

(14)     Entire Agreement; Severability; Voluntariness. Upon execution, this
         Agreement supersedes all earlier agreements between Dana (or its
         affiliates) and you with respect to the matters covered herein and all
         of the understandings between you and Dana (or its affiliates)
         regarding your employment and your retirement shall be those set forth
         in this Agreement. You acknowledge and agreed that Dana has made no
         promises to you in consideration for your entering into this Agreement
         other than those expressly set forth in this Agreement.

         The provisions of this Agreement shall be severable, and the invalidity
         of any provision shall not affect the validity of the other provisions.

         You acknowledge and agree that your decision to execute this Agreement:
         (a) was entirely voluntary on your part; (b) was not made in reliance
         on any inducement, promise, or representation, whether express or
         implied, other than the inducements, representations, and promises
         expressly set forth herein; and (c) did not result from any threats or
         other coercive activities to induce acceptance of this Agreement.

(15)     Restricted Stock; Stock Options; Additional Compensation; Perquisites.
         The 20,000 shares of restricted stock award granted to you on October
         21, 2003 will be vested by action of the Compensation Committee as soon
         as practicable at such time as we mutually agree based on legal and tax
         considerations. Further, the

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         18,000 shares of the total restricted stock grant that was made on
         February 12, 2001 will vest as of your retirement date in accordance
         with your Restricted Stock Agreement for such grant. Distribution of
         these shares to the Executive (which shall mean both the 20,000 share
         grant and the 18,000 shares of the February 12, 2001 grant) will occur
         as soon as practicable but in no event later than October 31, 2004.
         Prior grants of Restricted Stock on July 20, 1997 will be distributed
         in accordance with the Executive's prior election.

         You will also have the rights of a retiree as to stock options that
         have previously been granted to you. All such options will be
         exercisable no later than the first to occur of the expiration date of
         each specific option grant and the date that is 60 months after your
         date of retirement.

         Any additional compensation that had been earned and deferred by
         Executive under the Dana Corporation Additional Compensation Plan shall
         be distributed to him in a lump sum cash payment in 2004.

         Dana will pay the cost of any tax, estate and financial planning
         services that you incur rendered by individuals or entities referenced
         on Attachment B hereto through December 31, 2004, except that tax
         services rendered pursuant to this provision shall mean services
         related to the tax year ending December 31, 2004. Your entitlement to
         reimbursements for the above-described perquisites will be governed by
         the terms of those perquisites as applied to similarly situated
         retirees. Statements for these services may either be forwarded by
         Executive to Dana or direct billed to Dana.

         You will be permitted to retain the use of your current company vehicle
         and gas card through June 30, 2004 and shall have the option at that
         time to purchase your company car for its fair market value, as
         determined under existing Dana procedures.

(16)     Additional Payment. In addition to the payments described in paragraph
         (2) above, you will also be entitled to a payment of $10,000 payable
         within 30 days after the execution of this Agreement. The additional
         payment described in this Paragraph (16) will be made to you to
         encourage and facilitate legal review by counsel of your choosing. We
         encourage you to seek the review of legal counsel prior to the
         execution of this Agreement. You acknowledge that you have had ample
         opportunity to fully discuss the terms of this Agreement with counsel.

(17)     No Admission. It is expressly understood and agreed by entering this
         Agreement, neither of the parties hereto are admitting any wrongdoing
         or liability.

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(18)     Amendment. This Agreement cannot be amended or modified in any respect,
         except by a subsequent written agreement entered into by both parties
         hereto.

(19)     Applicable Law. This Agreement shall be construed in accordance with
         applicable federal law and, to the extent not preempted thereby, the
         laws of the State of Ohio.

         Please indicate your acceptance of the terms of this Agreement by
signing in the signature space provided below and returning the signed letter to
Dana.

                                          Very truly yours,

                                          DANA CORPORATION

                                          /s/    Richard W. Spriggle
                                          --------------------------------
                                                 Richard W. Spriggle
                                          Vice President - Human Resources

Accepted & Agreed:

/s/ William J. Carroll
-------------------------------
William J. Carroll
Executive

Date:  April 29, 2004

                                       8<PAGE>

                                                                   EXHIBIT 10.26

                            JDA SOFTWARE GROUP, INC.
                             14400 NORTH 87TH STREET
                            SCOTTSDALE, ARIZONA 85260

Confidential
Via E-Mail

June 16, 2004

Mr. Ray Rike
511A Simonds Loop
San Francisco, CA 94129

Dear Ray:

We are pleased to offer you employment with JDA Software, Inc. (the "Company"),
contingent on closing of the acquisition of QRS Corporation ("QRS") by the
Company, pursuant to which QRS will merge into and become a wholly-owned
subsidiary of the Company (the "Merger"). We anticipate that the Merger
Agreement between JDA and QRS will be signed on Wednesday, June 16, 2004 and
that the Merger will close and be final late in the third quarter or the fourth
quarter of 2004.

Your new position will be Senior Vice President of Collaborative Solutions, a
member of the JDA executive team and you will report to Hamish Brewer. Your
initial responsibilities will be as follows:

      -     Defining and executing the corporate strategy for growing JDA's
            collaborative solutions business

      -     Defining and supporting the acquisition strategy for JDA's
            collaborative solutions business

      -     Defining and rolling out sales programs through the regions for
            JDA's collaborative solutions business

      -     Defining and executing marketing programs through JDA's marketing
            organization for JDA's collaborative solutions business

      -     You may be required to manage a sales force for some or all of JDA's
            collaborative solutions business

      -     Defining product direction and strategy along with JDA product
            management for JDA's collaborative solutions business

The salary for your position is $250,000 per year. JDA will credit your past
service with QRS, for all purposes. You will be eligible to participate in the
JDA Bonus Program effective at the beginning of the 4th quarter of 2004. I will
guarantee the bonus payments during the first six months at a minimum of 100%.
Your annual on-target variable income will be $250,000.

With a view to a longer term relationship, you will receive 100,000 JDA options
on joining JDA which will vest over a three year period with the first third
vesting after 12 months. The typical run rate for a senior vice president at JDA
has historically been around 50,000 options per annum and you would be treated
in a similar manner to other SVP's on a forward going basis. The JDA option plan
may be replaced next year by another form of equity compensation plan for JDA
executives. If so, you will be offered the same kind of conditions related to
this change as other JDA executives.

In addition, immediately prior to the effective time of the Merger, you will be
entitled to receive from JDA, in lieu of any severance or COBRA payment due to
you pursuant to Section 1 under the heading "Change of Control Benefits" in
certain Letter Agreement dated May 1, 2003 by and between you and QRS (the
"Letter Agreement"), an amount equal to your target total annual compensation
with QRS at the
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level in effect at the closing of the Merger. You agree that amount is $500,000
(the "Severance Amount").

In the event that your employment is terminated by JDA during the 12-month
period following the commencement of your employment with the JDA for any reason
other than for cause, you shall be entitled to receive severance in the amount
of six months base salary and bonus, provided that you sign a mutually agreeable
release of claims agreement.

Please refer to the enclosed Benefit Summary for details on benefit related
programs offered by JDA. If you have specific benefits questions, Margie Jones,
our Benefits Manager is available by calling 1-800-438-5301.

By accepting this offer of employment you waive and release JDA, QRS and their
respective affiliates, directors and officers from any claim of liability for
severance benefits for your employment with QRS and/or any of its affiliates.

Although we hope that you will want to build a career with JDA, your employment
with JDA is "at will," which means that you can leave JDA at any time you choose
to do so. Likewise, JDA can terminate your employment at any time, with or
without cause, if and when it chooses to do so. The provisions of this agreement
regarding "at will" employment may only be modified by a document signed by you
and the Chief Executive Officer of JDA.

This letter and the confidentiality agreement are intended to set out the terms
and conditions of your employment with the Company upon the closing of the
Merger. Your execution of this offer letter is a condition to the signing of the
Merger Agreement; therefore, we must have your acceptance of this contingent
offer of employment as soon as possible and no later than 10 PM MST, JUNE 16TH,
2004. Please sign this letter and the enclosed confidentiality agreement, then
return it to Margaret O'Shea. The acceptance of employment must be faxed to
480-308-4265 no later than 10 p.m. MST on June 16, 2004.

Furthermore, by signing this letter, you also agree to terminate the Letter
Agreement subject to, conditioned upon and effective as of the effective time of
the Merger.

We look forward to having you as part of JDA Software, Inc., welcome!

Yours truly,                                    Accepted:

/s/ Mary E. Sculley

Mary E. Sculley                                    /s/ Ray Rike
Vice President, Human Resources                 _____________________________
                                                        Ray Rike

                                                     June 16, 2004
                                                _____________________________
                                                Date

Pursuant to the terms and conditions of the Letter Agreement, the undersigned,
on behalf of QRS Corporation, (i) hereby agrees and consents to the termination
of the Letter Agreement subject to, conditioned upon and effective as of the
effective time of the Merger; and (ii) agrees to cause payment of the Severance
Payment by QRS immediately prior to the effective time of the Merger.
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QRS Corporation

By:   /s/ Elizabeth A. Fetter
    ______________________________
    Elizabeth A. Fetter
    President and Chief Executive Officer

Date:  June 16, 2004
     ____________________________

cc: QRS Vice President, Human Resources
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                            JDA SOFTWARE GROUP, INC.
                             14400 NORTH 87TH STREET
                            SCOTTSDALE, ARIZONA 85260

Confidential
Via E-Mail

June 16, 2004

Mr. Ray Rike
511A Simonds Loop
San Francisco, CA 94129

Dear Ray:

This letter agreement ("Agreement") sets forth and confirms certain
understandings between you and JDA Software Group, Inc., a Delaware corporation
and its current and future affiliates (collectively, "JDA"), and third parties
who have provided confidential information to JDA ("Third-Party Beneficiaries")
with respect to your employment with JDA and your responsibilities and
obligations to JDA. Your signature of this Agreement is a condition of your
employment with JDA.

JDA's disclosure of confidential information to you is conditioned upon and in
consideration for your entering into this Agreement. This Agreement is intended
to protect important interests of JDA and the Third-Party Beneficiaries,
particularly their interests in valuable technology, customers, personnel,
business interests and confidential information that JDA has acquired or
obtained access to over the years.

You agree to devote your full time attention and efforts to the performance of
your duties as JDA may establish from time to time. In all aspects of your
employment with JDA, you shall act in the utmost good faith, deal fairly with
JDA, and fully disclose to JDA all information that JDA might reasonably
consider to be important or relevant to JDA's business. While employed at JDA,
you shall not establish, operate, participate in, advise, or assist to establish
in any manner whatsoever any business that JDA in its sole and reasonable
discretion determines would be in competition with JDA's business, and you shall
not take any preliminary or preparatory steps toward establishing or operating
such business or developing a data base, including soliciting customers,
suppliers or employees of JDA with respect to such business prospects. You must
not divert from JDA any business opportunity in which JDA may or could be
interested and you must immediately notify JDA if you become aware of any
potential JDA business opportunity.

You could cause irreparable harm to JDA that could not be adequately compensated
by money damages if you solicited the business of JDA's clients, or induced
employees of JDA to work for you or for a Competitor of JDA. A "Competitor" is
an entity that markets services or software that compete with one or more JDA
service offering or software product. Therefore, during your employment and for
a period of 1 year thereafter, you must not directly or indirectly: (1) solicit
for employment or hire any employee of JDA or anyone who was an employee of JDA
at any time during the preceding six (6) months; or (2) cause or encourage any
other party to do so. Additionally, you must not directly or indirectly
interfere with or act in a manner detrimental to the business and affairs of
JDA. You must not make any written or oral statement about JDA, its employees,
customers, suppliers or agents that is (i) untrue, derogatory or defamatory, or
(ii) designed to embarrass or criticize any of the foregoing.

During your employment, you will obtain access to information regarding the
business of JDA and which is confidential to JDA or Third-Party Beneficiaries
("Confidential Information"). "Confidential Information" includes but is not
limited to:
<PAGE>
      (1)   Application, data base, and other computer software developed or
            acquired by JDA, whether now or existing in the future, and all
            modifications, enhancements and versions of the software and all
            options available with respect to the software, and all future
            products developed or derived from the software;

      (2)   Source and object codes, flowcharts, algorithms, coding sheets,
            routines, sub-routines, design concepts and related documentation
            and manuals;

      (3)   Marketing techniques and arrangements, mailing lists, purchasing
            information, pricing policies, quoting procedures, financial
            information, customer and prospect names and requirements, employee,
            customer, supplier and distributor data and other materials and
            information relating to JDA's business and activities and the manner
            in which JDA does business;

      (4)   Discoveries, concepts and ideas including, without limitation, the
            nature and results of research and development activities,
            processes, formulas, inventions, computer-related equipment or
            technology, techniques, "know-how", designs, drawings and
            specifications;

      (5)   Organizational charts, internal telephone lists and employee
            directories, salary information, benefits, and other personnel
            information that is not publicly available;

      (6)   Any other materials or information related to the business or
            activities of JDA that are not generally known to others engaged in
            similar businesses or activities;

      (7)   All ideas which are derived from or relate to your access to or
            knowledge of any of the above enumerated materials and information;
            and

      (8)   Any materials or information related to the business or activities
            of the Third-Party Beneficiaries that are received by JDA in
            confidence or subject to nondisclosure or similar covenants,
            including without limitation, confidential proprietary business
            records, financial information, trade secrets, strategies, methods
            and practices of licensees of JDA software.

Confidential Information does not include inventions or other confidential
information, if any, listed on Exhibit B of this Agreement.

Maintaining the confidentiality of the Confidential Information is of utmost
importance to JDA. Accordingly, you agree that, except in the performance of
your duties as an employee of JDA, from and after the date of this Agreement
(including after the termination of your relationship with JDA, for whatever
reason), you will not disclose to any person, association, firm, corporation or
other entity in any manner, directly or indirectly, any of the Confidential
Information (in whatever form), received, acquired, or developed by you through
your association with JDA, or use, or permit any person, association,
corporation or other entity to use, in any manner, directly or indirectly, any
such Confidential Information.

You acknowledge that any computer programs, documentation or other copyrightable
works created in whole or in part by you during your employment with JDA are
"works made for hire" under the United States Copyright Act, 17 U.S.C. Section
101, and become part of the Confidential Information.

Confidential Information that you make, conceive, discover or develop, whether
alone or jointly with others, at any time during your employment with JDA,
whether at the request or upon the suggestion

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of JDA or otherwise, are the sole and exclusive property of JDA; if such items
relate to or are useful in connection with any business now or hereafter carried
on or contemplated by JDA, including developments or expansions of JDA's present
field of operations. You must promptly disclose to JDA all Confidential
Information made, conceived, discovered, or developed in whole or in part by you
for JDA during your employment with JDA and to assign to JDA any right, title or
interest you may have in such Confidential Information. You agree to execute any
instruments and to do all other things reasonably requested by JDA (both during
and after your employment with JDA) in order to vest more fully in JDA all
ownership rights in those items hereby transferred by you to JDA. If any one or
more of such items are protectible by copyright, and are deemed in any way to
fall within the definition of "work made for hire", as that term is defined in
17 U.S.C. Section 101, such works shall be considered "works made for hire", the
copyright of which shall be owned solely, completely and exclusively by JDA. If
any one or more of the items are protectible by copyright and are not considered
to be included in the categories of works covered by the "work made for hire"
definition contained in 17 U.S.C. Section 101, such works shall be deemed to be
assigned and transferred completely and exclusively to JDA by virtue of your
execution forth on Exhibit A of this Agreement) and 765 ILCS 1060/2, this
provision does not apply to inventions that you developed entirely on your own
time without using JDA's equipment, supplies, facilities, or trade secret
information.

You agree to maintain the confidentiality of the Confidential Information during
your employment and perpetually after the date of your termination. This
Confidentiality Agreement shall be binding upon you and JDA, and its successors
and assigns and shall inure to the benefit of JDA and the Third-Party
Beneficiaries. JDA's failure to require performance of your obligations under
this Agreement does not affect the right of JDA to enforce any provisions of
this Agreement at a subsequent time, and does not constitute a waiver of any
rights arising out of any subsequent or prior breach.

You agree that the restrictions of this Agreement are enforceable whether you
resign from employment, or your employment is terminated by JDA with or without
cause, with or without notice. Upon voluntary or involuntary termination of your
employment with JDA, you agree to sign an acknowledgement that the obligations
set forth herein pertaining to Confidential Information shall continue beyond
the last day of your employment at JDA. This Agreement (a) may not be modified
orally, but only by written agreement signed by you and JDA's President; (b)
contains the entire understanding between you and JDA with respect to this
subject matter, and (c) supersedes any prior agreements on this subject. The
invalidity or unenforceability of any provision of this Agreement shall not
affect the validity or enforceability of the other provisions of this Agreement.

Nothing in this Agreement should be construed as a guarantee that your
employment will continue for any specific period of time. This Agreement does
not create or imply a contract of employment or constitute a promise of
employment or continued employment. Your employment with JDA remains "at-will"
unless you and JDA have signed a separate contract of employment expressly and
explicitly modifying your status as an at-will employee.

You agree that the provisions in this Agreement are necessary and reasonable to
protect JDA's legitimate business interests. The provisions of this Agreement
are distinct and severable, and if any provision of this Agreement is invalid or
unenforceable, the invalidity and unenforceability of such provision shall not
affect the other provisions of this Agreement and all other provisions shall
remain in full force and effect. Additionally, if any provision of this
Agreement is so broad as to be unenforceable, such provision shall be
interpreted to be only so broad as is enforceable and shall not effect the
remainder of the Agreement. Any court interpreting this Agreement may modify
this Agreement to the extent necessary to consider it reasonable and
enforceable. It is expressly agreed that the exercise of any claim or cause of
action you may have against JDA, whether or not based on this Agreement, is not
a defense to the enforcement of this Agreement.

                                       3
<PAGE>
You represent that the performance of your duties as an employee of JDA will not
breach any Agreement or other obligation that you may have with a former
employer or any other party. You must not use or disclose your own or any other
party's confidential or proprietary documents, materials, or information to JDA
or any third party in the course of performing your duties as an employee of
JDA, unless the owner of the information has authorized the use or disclosure.

When your relationship with JDA ends (regardless of the reason), and earlier if
JDA requests, you must return to JDA all materials, correspondence, documents
and other writings, computer programs and printouts, and other information in
written, graphic, magnetic, optical, computerized or other form, which relate to
or reflect any Confidential Information, or the business of JDA, and you must
not retain any copies thereof, regardless of where or by whom such materials and
information were kept or prepared.

This Agreement shall be governed by and construed in accordance with the laws of
Arizona. Any suit, legal action or other legal proceeding arising out of or
relating to this Agreement shall be brought exclusively in the federal or state
courts located in the State of Arizona. You agree to submit to personal
jurisdiction in the foregoing courts and to venue in those courts. You further
agree to waive all legal challenges and defenses to the propriety of a forum in
Arizona, and to the application of Arizona law therein.

By signing below, you acknowledge that you understand and agree to the terms
contained in this Agreement, and that you are freely and voluntarily entering
into this Agreement.

ACCEPTED AND AGREED:

/s/ Ray Rike
_________________________
Ray Rike

June 16, 2004
_________________________
Date

                                       4
<PAGE>
                                    EXHIBIT A

2870. APPLICATION OF PROVISION PROVIDING THAT EMPLOYEE SHALL ASSIGN OR OFFER TO
ASSIGN RIGHTS IN INVENTION TO EMPLOYER.

      (a)   Any provision in an employment agreement which provides that an
            employee shall assign, or offer to assign, any of his or her rights
            in an invention to his or her employer shall not apply to an
            invention that the employee developed entirely on his or her own
            time without using the employer's equipment, supplies, facilities or
            trade secret information except for those inventions that either:

            (1)   Relate at the time of conception or reduction to practice of
                  the invention to the employer's business or actual or
                  demonstrably anticipated research or development of the
                  employer.

            (2)   Result from any work performed by the employee for the
                  employer.

      (b)   To the extent a provision in an employment agreement purports to
            require an employee to assign an invention otherwise excluded from
            being required to be assigned under subdivision (a), the provision
            is against the public policy of this state and is unenforceable.
<PAGE>
                                    EXHIBIT B

JDA Software Group, Inc.
14400 North 87th Street
Scottsdale, Arizona 85260-3649

Dear Sir or Madam:

      1.    The following is a complete list of all inventions or improvements
            relevant to the subject matter of my employment by JDA Software
            Group, Inc. (the "Company") that have been made or conceived or
            first reduced to practice by me alone or jointly with others prior
            to my employment by the Company, that I desire to remove from the
            operation of the Company's Proprietary Information and Inventions
            Agreement.

    X
__________  No inventions or improvements.

__________  See below:

__________  Additional sheets attached.

      2.    I propose to bring to the Company, as part of my employment, the
            following materials and documents of a former employer:

    X
__________  No materials or documents.

__________  See below:

                                                 /s/ Ray Rike
                                                 _____________________________
                                                 Ray Rike

                                                 June 16, 2004
                                                 _____________________________
                                                 Date
<PAGE>

                            JDA SOFTWARE GROUP, INC.
                             14400 NORTH 87TH STREET
                            SCOTTSDALE, ARIZONA 85260

Confidential
Via E-Mail

July 13, 2004

Mr. Ray Rike
511A Simonds Loop
San Francisco, CA 94129

Re: Amendment to Offer Letter dated June 16, 2004

Dear Ray:

In your offer letter dated June 16, 2004 (the "Existing Offer Letter") from JDA
Software Group, Inc. ("JDA"), you accepted the position of Senior Vice President
of Collaborative Solutions at JDA contingent on the merger of QRS Corporation
("QRS") with and into a wholly-owned subsidiary of JDA. Capitalized terms not
otherwise defined in this letter have the meaning assigned to them in the
Existing Offer Letter.

It has come to our attention that there was an unintended mistake in the fifth
full paragraph of the Existing Offer Letter which states that JDA, rather than
QRS, would be paying the Severance Amount ($500,000) owed to you from QRS. We
believe that it has been contemplated by JDA and QRS that QRS would bear the
expense of the Severance Amount. Accordingly, in order to properly reflect the
intent of the parties and correct the inconsistency in the Existing Offer
Letter, with the following amendment, we agree to amend and restate the entire
fifth full paragraph of the Existing Offer Letter with:

      "In addition, immediately prior to the effective time of the Merger, you
      will be entitled to receive from QRS, in lieu of any severance or COBRA
      payment due to you pursuant to Section 1 under the heading "Change of
      Control Benefits" in certain Letter Agreement dated May 1, 2003 by and
      between you and QRS (the "Letter Agreement"), an amount equal to your
      target total annual compensation with QRS at the level in effect at the
      closing of the Merger. You agree that amount is $500,000 (the "Severance
      Amount")."

If you acknowledge and agree to this amendment to the Existing Offer Letter,
please execute and date this letter in the space set forth below and return it
to Margaret O'Shea of JDA by fax at 480-308-4265 as soon as possible but not
later than 12 PM CST on July 16, 2004. Your original executed signature page
should follow by mail to Margaret's attention at the mailing address in the
letterhead above. Except as expressly amended as provided in this letter, the
Existing Offer Letter shall remain unmodified and in full force and effect.
<PAGE>
Again, we look forward to having you as part of JDA Software Group, Inc.

Yours truly,                                    ACCEPTED:

/s/ Mary E. Sculley
                                                /s/ Ray Rike
Mary E. Sculley                                 _______________________________
Vice President, Human Resources                 Ray Rike
                                                    July 21, 2004
                                                _______________________________
                                                Date

AMENDMENT AGREED AND ACKNOWLEDGED:

QRS Corporation

By: /s/ Elizabeth A. Fetter
    ____________________________
    Elizabeth A. Fetter
    President and Chief Executive Officer

Date:   July 21, 2004
      __________________________

cc: QRS Vice President, Human Resources

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