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 Activity diagram is basically a flow chart to represent the flow from one activity to another activity.

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Presentation on theme: " Activity diagram is basically a flow chart to represent the flow from one activity to another activity."— Presentation transcript:

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2  Activity diagram is basically a flow chart to represent the flow from one activity to another activity.

3 1. Actions or activity. 2. Start and End States. 3. Transitions. 4. Decision. 5. Forks and Joins. 6. Swim lane.

4  An action represents a single step within an activity, that is, one that is not further decomposed within the activity.

5  The start and end states let you know where the flow begins and ends.  Each activity diagram must have a start state, which is drawn as a solid dot, to signify where the flow begins.  End states are optional on the diagram  You can have more than one end state on the diagram, but only a single start state. End state Start state

6  A transition shows how the flow of control moves from one activity to another.  We can, set limitations on the transition to control when the transition occurs.  This can be done either by using an event condition.

7 event

8  In creating the activity diagram, you might need to model two or more different sequences of actions.

9  You can use the Fork Node and the Join Node to describe two or more threads of activities that can execute at the same time.  A fork node is a control node that splits a flow into multiple concurrent flows.  A fork node has one incoming edge and multiple outgoing edges.  A join node is a control node that synchronizes multiple flows.  A join node has multiple incoming edges and one outgoing edge.

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