A Link is an instance of an Association. It has a set of LinkEnds that matches the set of AssociationEnds of the Association.Links can be used as connectors between parts or ports in UML2.0, or they can be links between instances. Under Objecteering, a Link belongs to no element.When a link act as a connector between parts and or ports, these parts or ports should belong to the same context (be inside the same collaboration, classifier, etc.)
connection between instances.
Classes parentes :
Diagrammes de classes : Associations :