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UML Diagrams

What is the difference between sequence diagram and collaboration diagram? Can a sequence diagram be replaced by collaboration diagram?

Total Answers and Comments: 1

Last Update: November 02, 2007 Asked by: Sachin Pawar

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Submitted by: Dusan B

Sequence Diagrams (Message Sequence Charts) and Collaboration diagrams have a one to one relationship. Given a MSC you can easily convert it into a Collab. diag. and vice versa. However, the form in which you choose to present them offers advantages and disadvantages.

Collaboration Diagrams are useful for short interactions - too many interactions clutter up the diagrams and the diagram just becomes impossible to follow. However, for short interactions they take up less space and can give a more compact view of the system.

MSC are useful for long interactions, because they're not limited in space. If your interactions go on and on, you just keep adding them to the bottom of the diagram. This kind of interaction represented in a collab diagram would be difficult to follow.

So basically, as a general rule, short interactions (a few messages, maybe up to 7-8) are easily and nicely represented in a Collaboration diagram, otherwise, use an MSC.

Above answer was rated as good by the following members:
Neo_TCS

November 02, 2007 12:14:50

Dusan B

RE: UML Diagrams

Sequence Diagrams (Message Sequence Charts) and Collaboration diagrams have a one to one relationship. Given a MSC you can easily convert it into a Collab. diag. and vice versa. However the form in which you choose to present them offers advantages and disadvantages.

Collaboration Diagrams are useful for short interactions - too many interactions clutter up the diagrams and the diagram just becomes impossible to follow. However for short interactions they take up less space and can give a more compact view of the system.

MSC are useful for long interactions because they're not limited in space. If your interactions go on and on you just keep adding them to the bottom of the diagram. This kind of interaction represented in a collab diagram would be difficult to follow.

So basically as a general rule short interactions (a few messages maybe up to 7-8) are easily and nicely represented in a Collaboration diagram otherwise use an MSC.

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