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Tutorial 5-UML Diagram:Collaboration diagrams

5.Collaboration diagrams
Collaboration diagrams are also interaction diagrams. They convey the same information as sequence diagrams, but they focus on object roles instead of the times that messages are sent. In a sequence diagram, object roles are the vertices and messages are the connecting links.

The object-role rectangles are labeled with either class or object names (or both). Class names are preceded by colons ( : ).

Each message in a collaboration diagram has a sequence number. The top-level message is numbered 1. Messages at the same level (sent during the same call) have the same decimal prefix but suffixes of 1, 2, etc. according to when they occur.

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