Data structures for multiversion data warehouse

  • Authors:
  • Jan Chmiel

  • Affiliations:
  • Institute of Computing Science, Poznań University of Technology, Poznań, Poland

  • Venue:
  • ADBIS'09 Proceedings of the 13th East European conference on Advances in Databases and Information Systems
  • Year:
  • 2009

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Abstract

In this paper we present data structures for the Multiversion Data Warehouse (MVDW). The data structures include: (1) BitmapSharing – developed for sharing data between multiple DW versions and (2) a MultiVersion Join Index – developed for supporting star queries that join multiple fact and dimension tables in the MVDW. The presented data structures have been evaluated experimentally showing their good performance.