Architecting and designing : UML 2.5 : Model Elements : Classifiers : Association
  
Association
An Association classifies a set of tuples representing links between typed instances.
To create an Association between two Model Elements or Classifiers, you create an AssociationClass and then relate the AssociationClass to each Model Element or Classifier through an AssociationNode to Class as Property relationship. For instructions on how to do this, see How to create an Association.
See also
Activity
Actor
DataType
Enumeration
Extension
FunctionBehavior
Information Item
Interaction
Interface
Opaque Behavior
Primitive Type
Signal
State Machine
Stereotype
Use Case
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