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Use Case Diagrams

A use-case diagram shows how different types of users interact with the system.

It shows the different types of users around a large box representing the system. It also shows the main functions of the system and link them to the users.

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Your Task

Task 1: Download/print and complete the following Use Case Diagram used to design an auction website.

Task 2: Create a use-case diagram for a social network. (e.g. Facebook)

Task 3: Create a use-case diagram for a game of Pacman.