UML activity diagrams - Brief explanation of all elements in activity diagrams.

Brief explanation of all elements in activity diagrams

- Activities: An activity indicates an action that performed in the system.
- Transitions: Transitions are represented by open arrow heads. Transitions are used to indicate the flow among elements in the diagram.
- Decision Points: The logical branching is depicted by the decision points.
- States: A state is shown in a rounded rectangle. States are indicated to mention the mile stones of processing in the activity diagrams.

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