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6 Cards in this Set
- Front
- Back
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SDLC Phases
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Feasibility and planning
Systems analysis Systems design Systems implementation Maintenance & review |
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Problems With SDLC
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Information gap can be very costly
Designers want to ‘freeze’ requirements, users want to keep things open Additional changes can cause severe delays Initial user input may be difficult to get Takes considerable time All system details have to be specified up front |
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Prototyping
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Uses an iterative process
Get some input Work up a scale model Get feedback from the user group Go back to step 2 |
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Benefits to Prototyping
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Greatly helps ensure user acceptance of final system
More certain of getting proper user input Mis-communications can be fixed earlier in the process Reduces the information gap |
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Problems With Prototyping
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Can actually take longer than SDLC
More difficult to pin down a deliverable schedule/budget End user may adopt a prototype that isn’t complete |
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Benefits of SDLC
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Control large complex development projects—ensure team work
avoid runaway projects Avoids redundancy or duplication Ease of maintenance Easier to train and monitor development Internal consistency and documentation make it easier to modify later. Tolerates changes is MIS staffing |
