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Activity Diagrams.md

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Activity Diagrams
2022-11-08
2022-11-21

Activity Diagram

Flow chart of activities performed by the system.

Swimlanes

Partition an activity diagram to show who is doing which action.

Parallel Paths

Fork nodes indicate the start of concurrent flows of control.

Join nodes indicate the end of parallel paths.

In a set of parallel paths, execution along all parallel paths should be complete before the execution can start on the outgoing control flow of the join.

[!EXAMPLE]  In this activity diagram (from an online shop website) the actions User browses products and System records browsing data happen in parallel. Both of them need to finish before the log out action can take place.

Examples