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communication link
subjectfact 
communication linkcan exist between two objects whenever it is possible for one object to send a message to the other one, including the following situations:
  • The classes of the two objects are joined by an association
  • The receiving object is stored in a local variable of the sending method (but the objects are not yet joined by an association)
  • A reference to the receiving object has been received as a parameter of an earlier message to the sender
  • The receiving object is global
  • The objects communicate over a network
2001-08-30 14:54:58.0
has definition In a collaboration diagram, a line drawn between each pair of objects involved in the sending of a message2001-08-30 14:54:58.0
does not necessarily correspond to instances of associations (i.e. links) in a class diagram2001-08-30 14:54:58.0
is a subtopic of 8.1 - Interaction Diagrams2001-08-30 14:54:58.0
is a kind of symbol in collaboration diagram2001-08-30 14:54:58.0