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Selecting the Best Alternative

Selecting the Best Alternative . Class 19. Project Identification & Selection. Project Initiation & Planning. Analysis ***. Logical Design. Physical Design. Implementation. Maintenance. SDLC. Analysis Steps. 1. Requirements Determination 2. Requirements Structuring

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Selecting the Best Alternative

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  1. Selecting the Best Alternative Class 19

  2. Project Identification & Selection Project Initiation & Planning Analysis *** Logical Design Physical Design Implementation Maintenance SDLC

  3. Analysis Steps • 1. Requirements Determination • 2. Requirements Structuring • 3. Alternative Generation & Selection • 3a. Functional requirements • 3b. Environment • 3c. Implementation • 4. Review Recommendations with Management

  4. Deliverables • Usually three different alternatives for building the replacement or new information system • The alternative judged most likely to lead to the most desirable information system • A Baseline Project Plan for turning the most likely alternative into a working information system

  5. Step 3a: • Prioritize Requirements • Refine scope • Determine level of automation

  6. Step 3a: Generate and evaluate Functional Requirement alternatives • Generate more than one alternative based on functional requirements • Typically 3 chosen • Bare Bones solution • Mid-level solution • Bells & Whistles solution

  7. Choosing the alternatives • Reevaluate feasibility • Consider constraints: • 1. • 2. • 3. • 4. • 5.

  8. Step 3a: Generate and evaluate Functional Requirement alternatives • Propose 3 alternatives • Select Best • On a related note, why might a company decide to end the project at this point?

  9. Step 3b: Generate and evaluate Environment alternatives • Hardware, System software, Networks • Development tools

  10. Step 3c: Generate and evaluate implementation alternatives • Outsourcing / Custom-built • Packages, Turnkey, ERP • In-house

  11. Outsourcing / Custom built • The practice of turning over responsibility of some to all of an organization’s information systems applications and operations to an outside firm • Examples:

  12. Outsourcing: What to consider • 1. • 2. • 3.

  13. Choosing Off-the-Shelf Software • ______________ • ______________ • ______________ • ______________ • ______________

  14. How Can We Get Information About a Software Package? • _______________________ • _______________________ • _______________________ • _______________________

  15. Advantages 1. Disadvantages 1. In-house development

  16. Why are we worrying about implementation alternatives now? • Training users • Cost • Support • User acceptance

  17. Step 4: Review with management • How formal? • How to compile, organize, and present

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