Object-Oriented Analysis Design (3)

United Modeling Lanaguage(UML)

• The Unified Modeling Language(UML) is a visual language for specifying, constructing and documenting the artifacts of systems.
• 3 ways to apply UML
  Sektch : conceptual perspective
  Blueprint : specification perspective
  Programming language : Implementation perspective

13 UML diagrams

Inception

• Inception is a short step to elaboration including :
  - A short requirements workshop and feaibility study
  - Most use cases written in brief format. (Sketch level)
  - Most influential and risky requirements identified.
• Important artifcts starts in Inception :
  - Use-Case model : functional requirements
  - Supplementary specification : all other requirements

 

Use Cases

• Use cases are text stories of some actors using a system to meet goals.
  - A mechanism to capture requirements
  - Use case is not a diagram, but a text.

 

Use Case Diagram

• Use case diagram illustrates  the name of use cases and actors, and the relationships between them.