Easiest and More Difficult: You have modeled Piccadilly’s essential requirements in Chapter 1.13More Events, which used the existing system as a starting point. However, not all the requirements for the final system are part of the existing one. The users will certainly take advantage of your development effort to introduce requirements that have no current equivalent. It is this kind of requirement that we call, logically enough, a new requirement.
Most Difficult: This is not on your ...
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