Behavioral Models

Reading

Sommerville, Chapter 5, Sections 5.4

Objectives

1. Understand how Data Flow Diagrams and UML Activity Diagrams can be used to specify the data flow of a software product.
2. Create a UML State Diagram to model the event-driven behavior of a software system.

Notes

Read using the following as a guide:

1. Understand how Data Flow Diagrams and UML Activity Diagrams can be used to specify the data flow of a software product.
   • Describe the purpose and components of a Data Flow Diagram and related them to a corresponding UML Activity Diagram.
2. Create a UML State Diagram to model the event-driven behavior of a software system.
   • Describe the concepts of State and Transition within the context of a UML State Diagram.

Resources

Activity Diagrams

Overview

Examples

• “The Lion Sleeps Tonight”
• Online Shopping (courtesy uml-diagrams.org)
• Resolve Software Issue (courtesy uml-diagrams.org)
• Ticket Vending Machine (courtesy uml-diagrams.org)

State Machine Diagrams

Examples

• Water Phases (courtesy uml-diagrams.org)
• Online Shopping (courtesy uml-diagrams.org)
• Thread Life Cycle (courtesy uml-diagrams.org)