UML - Class Diagram

[jimin-kiim]

• Object and Object Diagram
• Class
  • class variable and class operation
  • abstract classes and operations
  • interfaces
• Class Relationships
  • dependency
  • association
  • aggregation
  • composition
  • inheritance( generalization)
• Class Diagram
• Code Generation

[jimin-kiim]

Designing Class Diagram

• the same UML class diagrams can be used in multiple perspectives
• in a conceptual perspective: Domain Model (Elaboration phase in UP, OOA)
  • show association names but avoid navigation arrows since a domain model is not a software perspective.
• in a design perspective: DCD (Design Class Diagram) (Elaboration phase in UP, OOD)
  • includes navigation arrows
• keywords
  • <>
  • <>
  • {abstract} : abstract element; can't be instantiated
  • {ordered} : a set of objects have some imposed order
• <> : a refinement of an existing modeling concept.
  • is not a keyword.
  • provide an extension mechanism in the UML
  • defined within a UML profile
  • a collection of related stereotypes, tags, and constraints to specialize the use of the UML for a specific domain or platform.

[jimin-kiim]

Interaction Diagram and Class Diagram

• From interaction diagrams, the definitions of class diagrams can be generated.
• When we draw interaction diagrams, a set of classes and their methods emerge.
• Draw interaction diagrams before class diagrams.
• But in practice, especially when following the agile modeling, these complementary dynamic(interaction) and static(class) views are drawn concurrently.