Semantics of the Minimum Multiplicity in Ternary Associations in UML
نویسندگان
چکیده
The concept of multiplicity in UML derives from that of cardinality in entity-relationship modeling techniques. The UML documentation defines this concept but at the same time acknowledges some lack of obviousness in the specification of multiplicities for n-ary associations. This paper shows an ambiguity in the definition given by UML documentation and proposes a clarification to this definition, as well as a simple extension to the current notation to represent other multiplicity constraints, such as participation constraints, that are equally valuable in understanding n-ary associations.
منابع مشابه
OMG Unified Modeling Language Specification
Syntax The abstract syntax is presented in a UML class diagram showing the metaclasses defining theconstructs and their relationships. The diagram also presents some of the well-formedness rules,mainly the multiplicity requirements of the relationships, and whether or not the instances of aparticular sub-construct must be ordered. Finally, a short informal description in natural...
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Syntax The abstract syntax is presented in a UML class diagram showing the metaclasses defining theconstructs and their relationships. The diagram also presents some of the well-formedness rules,mainly the multiplicity requirements of the relationships, and whether or not the instances of aparticular sub-construct must be ordered. Finally, a short informal description in natural...
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