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Extending the E/R Model for the Multidimensional Paradigm

  • Carsten Sapia
  • Markus Blaschka
  • Gabriele Höfling
  • Barbara Dinter
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1552)

Abstract

Multidimensional data modeling plays a key role in the design of a data warehouse. We argue that the Entity Relationship Model is not suited for multidimensional conceptual modeling because the semantics of the main characteristics of the paradigm cannot be adequately represented. Consequently, we present a specialization of the E/R model — called Multidimensional Entity Relationship (ME/R) Model. In order to express the multidimensional structure of the data we define two specialized relationship sets and a specialized entity set. The resulting ME/R model allows the adequate conceptual representation of the multidimensional data view inherent to OLAP, namely the separation of qualifying and quantifying data and the complex structure of dimensions. We demonstrate the usability of the ME/R model by an example taken from an actual project dealing with the analysis of vehicle repairs.

Keywords

Data Warehouse Dimension Level Meta Model Multidimensional Data Graphical Notation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Carsten Sapia
    • 1
  • Markus Blaschka
    • 1
  • Gabriele Höfling
    • 1
  • Barbara Dinter
    • 1
  1. 1.Bavarian Research Center for Knowledge-Based SystemsFORWISSMunichGermany

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