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Proceedings Article: ID no. (ISBN etc.):  ISBN~1-930708-05-X BibTeX citation key:  Barbier
F. Barbier, B. Henderson-Sellers, A. Opdahl and M. Gogolla, "The Whole-Part Relationship in Object-Oriented Modeling" in Unified Modeling Language: Systems Analysis, Design, and Development Issues, K. Siau and T. Halpin, Eds., 2001, p. 186–209.
Added by: Deleted user 2007-01-08 09:59:45
 B 
Categories: AG-Gogolla, SAT, [ old ---- Adaptive Kommunikation --- old ]
Creators: Barbier, Gogolla, Halpin, Henderson-Sellers, Opdahl, Siau
Collection: {Unified Modeling Language: Systems Analysis, Design, and Development Issues}

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Abstract
{This study of the semantics of the Whole-Part relationship in OO modelling is based on previous detailed analysis of the semantics of UML's Aggregation and Composition (white and black diamonds). Although UML is nowadays a standard and an intensively used OO modelling language, the way the Whole-Part is formalised is unsatisfactory. In this respect, we provide a complete specification by using OCL (Object Constraint Language). This is based on a separation between primary characteristics assigned to the "Whole-Part" metatype, considered as necessary in the metamodel of UML, and secondary features possessed by subtypes of this metatype. This UML-compliant style of specification, based on the use of OCL as well as metamodelling, allows us to directly incorporate our results into the metamodel, in particular to revise UML's definition of Composition.}
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