ITM 305 Chapter Notes - Chapter 4: Kiss Principle, Business Process Modeling, Activity Diagram

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Turning the requirements into functional models: models are logical; i. e. independent of how they are implemented (manual/computerized, develop use-cases from the requirements. Use-case: how a system interacts w/ its environment. Includes a diagram and a description to depict the discrete activities that the users perform: develop activity diagrams from the use-cases. These models the business processes or how a business operates. Used to illustrate movement of objects (data) b/w activities. Elements of use-case diagrams: actors: users or other interacting systems, associations: lines to connect actors and use cases, interactions, inclusions, extensions or generalizations. Use-case: a major process in the system that gives a benefit to users. Subject boundary: a named box that depicts the scope of the system. Carefully review the current set of use-cases: split or combine some to create the right size, identify additional use-cases. Action or activity: represents action or set of actions. Control flow: shows sequence of execution.

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