CS3340:   Intro OOP and Design

 

UML- UseCase: Sequence Diagrams

Help descibe the sequence involved in a Use-Case

A type of Interaction Diagram

 

 

 

Example showing Higher and then lower resolution view of the sequence

 

Example 2

  • The WatchUser actor initiates the use case.
  • Object names are underlined to denote they are instances

 

 

  • describe OO programming messages, each with a receiver and sender.
  • vertical lines represent the instances of the types indicated above them
  • horizontal lines represent actions that involve the instances that they connect.
© Lynne Grewe