Inheritance Diagrams

Diagram Rules

• each class should be represented by a labeled shape
• try to have the parent class above any subclassess
• arrows all point towards the parent class from each child
• Composition is shown using empty diamond end instead of arrow
• Aggregation is shown using filled diamond end instead of arrow

Example

Aggregation / Composition Example

Association Aggregation is now just Aggregation, and Composition Aggregation is now just Composition.