Activity diagram in UMLAn activity diagram represents the flow from activity to activity. It is used to model dynamic aspects of the systems. It is just like flowchart that shows flow of control from activity to activity. Activities ultimately result into actions.
Activity diagram includes:
- Activity states and Action states
Common use of activity diagrams are
To model a workflow: In this type, object flow is represented.
To model an operation: In this, operations are important that are shown as flowchart.
Define Activity diagram.They provide an overview of the system. They describe the business rules, use cases, processes with decision points and alternate flows, parallel operation in pictorial format. They make complex words easier to understand.