Keywords: Aggregation-Composition.png UML diagram showing Aggregation and Composition with reference to Wiki page http //en wikipedia org/wiki/Object_composition Own 2006-11-21 Ian Vaughan Class diagrams ImageNote 1 79 79 8 8 152 269 2 There are many professors for one Department ImageNoteEnd 1 ImageNote 2 81 158 8 8 152 269 2 And many department exists in a single university ImageNoteEnd 2 |