Alg\`ebre OLAP et langage graphique
Franck Ravat (IRIT), Olivier Teste (IRIT), Gilles Zurfluh (IRIT)
TL;DR
This paper introduces a multidimensional OLAP model with a constellation schema, a query algebra for complex analysis, and a graphical language to simplify decision-making processes.
Contribution
It presents a novel multidimensional model with a dedicated algebra and a graphical language for improved OLAP analysis.
Findings
Defined a constellation-based multidimensional model
Developed a user-oriented query algebra for OLAP
Created a graphical language to facilitate decision analysis
Abstract
This article deals with OLAP systems based on multidimensional model. The conceptual model we provide, represents data through a constellation (multi-facts) composed of several multi-hierarchy dimensions. In this model, data are displayed through multidimensional tables. We define a query algebra handling these tables. This user oriented algebra is composed of a closure core of OLAP operators as soon as advanced operators dedicated to complex analysis. Finally, we specify a graphical OLAP language based on this algebra. This language facilitates analyses of decision makers.
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Taxonomy
TopicsAdvanced Database Systems and Queries · Data Management and Algorithms · Semantic Web and Ontologies