Chapter 7: Modeling System Requirements: Use CasesThe hardest single part of building a software system is deciding precisely what to build. No other part of the conceptual work is a difficult as establishing the detailed technical requirements, including all the interfaces to people, to machines, and to other software systems. No other work so cripples the resulting system if done wrong. No other part is more difficult to rectify later. Fred Brooks One of the primary challenges is the abili
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use | case | system | actor | requir | model | busi | provid
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