Specifying the flow of control and data in activity diagrams
In UML modeling, you can create one or several activity
diagrams to illustrate how the activity nodes, activity edges, and
other activity diagram model elements relate to each other.
Adding call behaviors to activity diagrams
When you model the flow of control in an activity diagram, you can add call behavior nodes that reference behavior that is defined in other diagrams. You can create a reference to behavior in a new activity, state machine, or interaction diagram or create a reference to behavior in an existing diagram.
Adding call operations to activity diagrams
When you model the flow of objects in an activity diagram, you can add call operations that reference behavior that is defined by operations in the model. You can create a reference to a new operation or to an existing operation.
Specifying relationships in UML diagrams
In UML, relationships identify the semantic ties that exist between
model elements. To add relationships to a model, you must work
in the diagram editor and add connectors between the diagram elements. You
cannot specify relationships in the Model Explorer view.