3C Clear Clean Concise UML
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communityUML 2torial
5.4 Model structuring elements
UML 2 has three major concepts for structuring the model: type, role and relationship.
Type: A type is used in three ways: to classify elements, as a shorthand used to specify another element and for type checking.
Role: A role is used to represent something, without specifying which particular thing.
Relationship: A relationship is used to represent some structure in the model.
It represents a structure that is present in the model, but not necessarily specified to
also appear in the system or its environment.
Use the model element links above or the Next link below.
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