Algebraic and Graphic Languages for OLAP Manipulations

Algebraic and Graphic Languages for OLAP Manipulations

Ravat Franck (Université Toulouse I, France), Teste Olivier (Université Toulouse III, France), Tournier Ronan (Université Toulouse III, France) and Zurfluh Gilles (Université Toulouse I, France)
DOI: 10.4018/978-1-60566-717-1.ch004
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Abstract

This article deals with multidimensional analyses. Analyzed data are designed according to a conceptual model as a constellation of facts and dimensions, which are composed of multi-hierarchies. This model supports a query algebra defining a minimal core of operators, which produce multidimensional tables for displaying analyzed data. This user-oriented algebra supports complex analyses through advanced operators and binary operators. A graphical language, based on this algebra, is also provided to ease the specification of multidimensional queries. These graphical manipulations are expressed from a constellation schema and they produce multidimensional tables.

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