Modeling user workflow by using activity diagrams

You can use activity diagrams to model the sequence of actions that must take place in a system or application.

Before UML 2.0, activity diagrams were part of state machines and were referred to as activity graphs. In UML 2.0 the activity diagram is a distinct diagram, separate from a state machine, that focuses on the tasks that a system must perform.

Related concepts
Activity diagrams
Canonical behavior in modeling diagrams
Constraints

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