![]() If a Call Behavior Action and its Behavior are not titled, type a name on the Call Behavior Action shape on the diagram, and the typed name will be set as the Behavior's name automatically.It inherits the type of the Call Behavior Action owner. A Behavior is created together with the Call Behavior Action.The Behavior Creation Mode works separately for each project. Together with the Communication and Sequence diagrams, they are used to relate Use Cases. The Activity diagram provides a convenient way to describe complex algorithms, parallel operations, and business processes. Therefore, it is beneficial to have a simplified representation for directly displaying activities. a State change and external events are less important inside the method. However, given the procedural nature of the implementation of the operations in which most events simply correspond to the end of the preceding activity, it is not necessary to distinguish States, activities, and Events systematically, e.g. An Activity diagram captures Actions and displays their results.Ī State diagram may also represent this sequencing of steps. the implementation of an Operation, or a Use Case.Īlthough Activity diagrams are often associated with interaction diagrams, they focus more on the work performed by a system, rather than an object interaction. Organized according to Actions, the Activity diagrams mainly depict the internal behavior of a method, i.e. An Activity diagram is a variant of a State diagram. Use the ordinary State diagrams in situations in which asynchronous events occur. Use the Activity diagrams in situations in which all or most of the events represent the completion of internally-generated actions, i.e. The purpose of this diagram is to focus on flows driven by the internal processing as opposed to external events. The entire Activity diagram is attached through the model to a Class (such as a Use Case), to a Package, or to the implementation of an Operation. It represents a State Machine of a procedure itself. ![]() In the State Machine, the States represent the performance of Actions or subactivities, while the Transitions are triggered by the completion of the Actions or subactivities. An Activity diagram falls under the behavioral diagramming family. An Activity diagram is a variation of a State Machine.
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