Extending the dimensional templates approach to integrate complex multidimensional design concepts

  • Authors:
  • Rui Oliveira;Fátima Rodrigues;Paulo Martins;João Paulo Moura

  • Affiliations:
  • Informatics Department, School of Technology and Management, Polytechnic Institute of Leiria, Portugal;GECAD-Knowledge Engineering and Decision Support Research Center Informatics Engineering Dept., School of Engineering, Polytechnic Inst. of Porto, Portugal;GECAD-Knowledge Engineering and Decision Support Research Center Informatics Engineering Dept., University of Trás-os-Montes e Alto Douro, Portugal;GECAD-Knowledge Engineering and Decision Support Research Center Informatics Engineering Dept., University of Trás-os-Montes e Alto Douro, Portugal

  • Venue:
  • DaWaK'11 Proceedings of the 13th international conference on Data warehousing and knowledge discovery
  • Year:
  • 2011

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Abstract

In the past, several approaches have been devised to semiautomate the multidimensional design (MDD) of Data Warehouse (DW) projects. Such approaches highly contribute to more expertiseindependent and deterministic MDD results. Among them, only the Dimensional Templates Approach (DTA) focuses on solving the critical resource containment problems of DW prototypes. Originally, the DTA allows solely the generation of basic MDDs. In this paper, we depict an extension to address complex MDD issues. These include (i) date/time hierarchies, (ii) many-to-many relationships, (iii) hierarchically structured data and (iv) coverage facts. The proposed enhancements, including a rebuilt generation algorithm, allow more accurate and broadening results than the original DTA. Throughout the paper, references are made to a real case study to which the improved DTA has been applied using two developed prototype tools.