Communication diagrams

While UML 1.4 collaboration diagrams at instance level (collaboration diagrams at classifier level are not supported by ARIS UML Designer 7.x) contain objects connected by links with attached stimuli, UML 2 communication diagrams contain lifelines connected by connectors with attached messages.

If a UML 1.4 link occurs in a collaboration diagram and in a class diagram it is migrated into a UML 2 connector and a UML 2 instance specification.

The remarks above about objects and lifelines in sequence diagrams are also valid for communication diagrams.