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Book Article: ID no. (ISBN etc.):  ISBN 978-0-387-35544-3, ISBN 978-0-387-39940-9 BibTeX citation key:  Gogolla{2009}a
M. Gogolla, "Object Constraint Language" in Encyclopedia of Database Systems, L. Liu and T. M. Öszu, Eds. Springer, Berlin, 2009, p. 1927–1929.
Added by: Mirco Kuhlmann 2010-12-15 15:54:46
 B 
Categories: AG-Gogolla
Creators: Gogolla, Liu, Öszu
Publisher: {Springer, Berlin}
Collection: {Encyclopedia of Database Systems}

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Abstract
{The Unified Modeling Language~(UML) includes a textual language called Object Constraint Language~(OCL). OCL allows users to navigate in class diagrams, to formulate queries, and to restrict class diagrams with integrity constraints. Roughly speaking from a practical prespective, the OCL may be viewed as an object-oriented version of the Structured Query Language~(SQL) originally developed for the Relational data model. Roughly speaking from a theoretical perspective, OCL may be viewed as a variant of first-order predicate logic with quantifiers on finite domains only. OCL has a well-defined syntax and semantics.}
Added by: Mirco Kuhlmann

 
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