1. Use Case Diagrams College of Alameda pmcdermott@peralta.edu Copyright © 2007 Patrick McDermott

2. A Use Case has Scenarios Use Case Scenario Class Requirements Program Spec Class Diagram

3. UC Diagrams “Draw a use case diagram to show what your system IS without getting into unnecessary detail.” —H1 st OOA&D The Blueprints for the system The Big Picture 10,000 foot view Claude Monet (1840-1926) Boulevard des Capucines 1873

4.  Box  The Box is the System Boundary You must provide everything inside You will NOT provide anything outside Use it to show Scope

5. UC Actor  Outside The System Else would be represented inside

6. Use Cases Business “Stories” Can become Test Cases User Rep: walking use case Enter Hours Revise Schedule Report Hours Boss HRIS Worker

7. Use Case Diagrams

8. A Use Case Diagram Enter Hours Revise Schedule Report Hours Boss HRIS Use Case 1 Use Case 2 Use Case 3 Actor A Actor C Actor B Worker Cartouche Actor Use Case

9. Chart Form