Activity Diagrams

An activity diagram illustrates the flow(s) of control among activities and actions associated with a particular object or set of objects.

Modelers typically use activity diagrams to illustrate the following:

• The flow of a complicated use case

• A workflow across use cases

• The logic of an algorithm

Figure 6-32 shows an excerpt from an example activity diagram.

Figure 6-32: Activity diagram

Since activity diagrams tend to contain design-level details, it makes sense to put them into design-level packages, such as the one shown in Figure 6-33.

Figure 6-33: Design package with activity diagram