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Activity Diagrams

Activity diagrams are graphical representations of workflows of stepwise activities and actions within the system. Activity diagrams are constructed from a limited number of shapes, connected with arrows. The most important shape types:
Arrows run from the start towards the end and represent the order in which activities happen.

Activity diagrams may be regarded as a form of flowchart. The following shapes are used in an Activity Diagram:

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Your Task

Task1: Create an activity diagram for an auction website. (e.g. eBay)

Task 2: Create an activity diagram for a social network. (e.g. Facebook)

Task 3: Create an activity diagram for a game of Pacman.