38.4. Activity Diagrams
A UML activity diagram offers rich notation to show a sequence of activities. It may be applied to any purpose (such as visualizing the steps of a computer algorithm), but is considered especially useful for visualizing business workflows and processes, or use cases. One of the UP workflows (disciplines) is Business Modeling; its purpose is to understand and communicate “the structure and the dynamics of the organization in which a system is to be deployed” [RUP]. A key artifact of the Business Modeling discipline is the Business Object Model (a superset of the UP Domain Model), which essentially visualizes how a business works, using UML class, sequence, and activity diagrams. Thus, activity diagrams are especially applicable ...
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