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Querying Data Warehouses

  • Alejandro Vaisman
  • Esteban Zimányi
Chapter
  • 5.1k Downloads
Part of the Data-Centric Systems and Applications book series (DCSA)

Abstract

Just as SQL is a language for manipulating relational databases, MDX (Multi-Dimensional eXpressions) is a language for defining and querying multidimensional databases. Although at first sight it may appear that MDX resembles SQL, they are significantly different from each other. While SQL operates over tables, attributes, and tuples, MDX works over data cubes, dimensions, hierarchies, and members (at the instance level). MDX is a de facto standard supported by many OLAP tool providers.

Keywords

Product Category Calculated Measure Monthly Sale Order Date Temporary Table 
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 2014

Authors and Affiliations

  • Alejandro Vaisman
    • 1
  • Esteban Zimányi
    • 2
  1. 1.Instituto Tecnológico de Buenos AiresBuenos AiresArgentina
  2. 2.Université Libre de BruxellesBrusselsBelgium

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