Activity Diagram Objects

PowerDesigner supports all the objects necessary to build activity diagrams.

Object

Tool

Symbol

Description

Start



Starting point of the activities represented in the activity diagram. See Starts and Ends ( OOM).

Activity



Invocation of an action. See Activities (OOM).

Composite activity

N/A



Complex activity decomposed to be further detailed. See Activities (OOM).

Object node



A specific state of an activity. See Object Nodes (OOM).

Organization unit



A company, a system, a service, an organization, a user or a role. See Organization Units (OOM ).

Flow



Path of the control flow between activities. See Flows ( OOM).

Decision



Decision the control flow has to take when several flow paths are possible. See Decisions ( OOM).

Synchronization



Enables the splitting or synchronization of control between two or more concurrent actions. See Synchronizations ( OOM).

End



Termination point of the activities described in the activity diagram. See Starts and Ends ( OOM).