Attribute value reordering for efficient hybrid OLAP

  • Authors:
  • Owen Kaser;Daniel Lemire

  • Affiliations:
  • University of New Brunswick, Saint John, Canada;National Research Council of Canada, Fredericton, Canada

  • Venue:
  • DOLAP '03 Proceedings of the 6th ACM international workshop on Data warehousing and OLAP
  • Year:
  • 2003

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Abstract

The normalization of a data cube is the process of choosing an ordering for the attribute values, and the chosen ordering.Our optimized hybrid OLAP storage mechanism was observed to be 44% more storage efficient than ROLAP and the gains due to normalization alone accounted for 45% of this increase in efficiency.