Outline ◆Introduction t◆Key Concepts ◆Use-Case Model Glossary ◆ Supplementary Specifications Object Oriented Analysis and Design 6
Object Oriented Analysis and Design 6 Outline Introduction Key Concepts Use-Case Model Glossary Supplementary Specifications
What Is System Behavior? ◆ System behavior is how a system acts and reacts. It is the outwardly visible and testable activity of a system. System behavior is captured in use cases. Use cases describe the system,its environment, and the relationship between the system and its environment. Object Oriented Analysis and Design 7
Object Oriented Analysis and Design 7 What Is System Behavior? System behavior is how a system acts and reacts. ▪ It is the outwardly visible and testable activity of a system. System behavior is captured in use cases. ▪ Use cases describe the system, its environment, and the relationship between the system and its environment
Major Concepts in Use-Case Modeling An actor represents anything that interacts with the system. Actor A use case is a sequence of actions a system performs that yields an observable result of value to a particular actor. UseCase Object Oriented Analysis and Design 8
Object Oriented Analysis and Design 8 Major Concepts in Use-Case Modeling An actor represents anything that interacts with the system. A use case is a sequence of actions a system performs that yields an observable result of value to a particular actor. UseCase Actor