X-warehouse: building query pattern-driven data

  • Authors:
  • Ji Zhang;Wei Wang;Han Liu;Sheng Zhang

  • Affiliations:
  • University of Toronto, Toronto, Canada;Nanjing Normal University, Nanjing, China;University of Toronto, Toronto, Canada;Nanjing Normal University, Nanjing, China

  • Venue:
  • WWW '05 Special interest tracks and posters of the 14th international conference on World Wide Web
  • Year:
  • 2005

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Abstract

In this paper, we propose an approach to materialize XML data warehouses based on the frequent query patterns discovered from historical queries issued by users. The schemas of integrated XML documents in the warehouse are built using these frequent query patterns represented as Frequent Query Pattern Trees (FreqQPTs). Using hierarchical clustering technique, FreqQPTs are clustered and merged to produce a specified number of integrated XML documents for actual data feeding. Maintenance issue of the data warehouse is also treated in this paper.