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On Querying UML Data Models with OCL

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≪UML≫ 2001 — The Unified Modeling Language. Modeling Languages, Concepts, and Tools (UML 2001)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 2185))

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Abstract

UML is the de-facto standard language for Object-Oriented analysis and design of information systems. Persistent storage and extraction of data in such systems is supported by databases and query languages. UML sustains many aspects of software engineering; however, it does not provide explicit facility for writing queries. It is crucial for any such query language to have, at least, the expressive power of Relational Algebra, which serves as a benchmark for evaluating its expressiveness. The combination of UML and OCL can form queries with the required expressive power. However, certain extensions to OCL are essential if it is to be used effectively as a Query Language. The adoption of the ideas presented in this paper will enable query expressions to be written using OCL, that are elegant and ideally suited for use in conjunction with UML data models. This technique is illustrated by expressing the UML equivalent of an example Relational data model and associated query expressions.

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Authors and Affiliations

  1. University of Kent at Canterbury, Canterbury, Kent, CT2 7NF

    D. H. Akehurst & B. Bordbar

Authors
  1. D. H. Akehurst
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  2. B. Bordbar
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Editor information

Editors and Affiliations

  1. Department of Mathematics and Computer Science Database Systems Group, University of Bremen, P.O. Box 33 04 40, 28334, Bremen, Germany

    Martin Gogolla

  2. Telelogic Technologies, P.O. Box 23 20, Fallbrook, CA, 92088, USA

    Cris Kobryn

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© 2001 Springer-Verlag Berlin Heidelberg

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Akehurst, D.H., Bordbar, B. (2001). On Querying UML Data Models with OCL. In: Gogolla, M., Kobryn, C. (eds) ≪UML≫ 2001 — The Unified Modeling Language. Modeling Languages, Concepts, and Tools. UML 2001. Lecture Notes in Computer Science, vol 2185. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45441-1_8

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  • DOI: https://doi.org/10.1007/3-540-45441-1_8

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  • Print ISBN: 978-3-540-42667-7

  • Online ISBN: 978-3-540-45441-0

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