Selecting the Best Alternative Class 19. SDLC Project Identification & Selection Project Initiation...
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Transcript of Selecting the Best Alternative Class 19. SDLC Project Identification & Selection Project Initiation...
![Page 1: Selecting the Best Alternative Class 19. SDLC Project Identification & Selection Project Initiation & Planning Analysis *** Logical Design Physical Design.](https://reader036.fdocuments.net/reader036/viewer/2022070400/56649f0e5503460f94c2284d/html5/thumbnails/1.jpg)
Selecting the Best Alternative
Class 19
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SDLCProject Identification
& Selection
Project Initiation& Planning
Analysis***
Logical Design
Physical Design
Implementation
Maintenance
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Analysis Steps
1. Requirements Determination 2. Requirements Structuring 3. Alternative Generation & Selection
3a. Functional requirements 3b. Environment 3c. Implementation
4. Review Recommendations with Management
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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
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Step 3a:
Prioritize Requirements Refine scope Determine level of automation
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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
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Choosing the alternatives Reevaluate feasibility Consider constraints:
1. 2. 3. 4. 5.
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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?
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Step 3b: Generate and evaluate Environment alternatives
Hardware, System software, Networks
Development tools
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Step 3c: Generate and evaluate implementation alternatives
Outsourcing / Custom-built Packages, Turnkey, ERP In-house
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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:
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Outsourcing: What to consider 1. 2. 3.
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Choosing Off-the-Shelf Software
______________ ______________ ______________ ______________ ______________
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How Can We Get Information About a Software Package?
_______________________ _______________________ _______________________ _______________________
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In-house development Advantages
1.
Disadvantages 1.
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Why are we worrying about implementation alternatives now?
Training users Cost Support User acceptance
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Step 4: Review with management
How formal? How to compile, organize, and
present