A Universal Metamodel and Its Dictionary

  • Paolo Atzeni
  • Giorgio Gianforme
  • Paolo Cappellari
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5740)

Abstract

We discuss a universal metamodel aimed at the representation of schemas in a way that is at the same time model-independent (in the sense that it allows for a uniform representation of different data models) and model-aware (in the sense that it is possible to say to whether a schema is allowed for a data model). This metamodel can be the basis for the definition of a complete model-management system. Here we illustrate the details of the metamodel and the structure of a dictionary for its representation. Exemplifications of a concrete use of the dictionary are provided, by means of the representations of the main data models, such as relational, object-relational or XSD-based. Moreover, we demonstrate how set operators can be redefined with respect to our dictionary and easily applied on it. Finally, we show how such a dictionary can be exploited to automatically produce detailed descriptions of schema and data models, in a textual (i.e. XML) or visual (i.e. UML class diagram) way.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Paolo Atzeni
    • 1
  • Giorgio Gianforme
    • 1
  • Paolo Cappellari
    • 2
  1. 1.Università Roma TreItaly
  2. 2.University of AlbertaCanada

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