1- how does the model handle a significant change in requirements late in develo
ID: 3647356 • Letter: 1
Question
1- how does the model handle a significant change in requirements late in development?2- Consider the processes introduced, Which ones give you the most flexibility to change in reaction to changing requirements?
3- Describe how adding personnel to a project that is behind schedule might make the project completion date even later.
4- Classify each as a functional requirement, a quality requirement, a design constraint, or process constraint. Which might be premature design decisions? Re-express each of these decisions as a requirement that the design decision was meant to achieve.
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Explanation / Answer
Changes to requirements are a familiar part of the software development life cycle. Changes that occur after the requirements had been agreed upon are called "creep." Creep is a major source of making projects late and over-budget. Ironically, creep often increases defects because rushed late changes not only may be done wrong but also have a way of breaking other things. While iterative development is valuable, creep can be curtailed far more by coupling it with additional methods that prevent much of the seldom-recognized real main cause of creep. That is, traditionally creep is blamed on seemingly inevitable numerous new requirements due to constant changes to the business and to the need to change requirements whose definitions were not sufficiently clear or testable. Projects generally focus on requirements of the product, system, or software that they think should be created; and these are the requirements that change so much. What doesn't change nearly so much are the real, business requirements that the product, system, or software must satisfy in order to provide value. By learning to better discover the real, business requirements creep can be cut dramatically.
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