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Multi-cube computation

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2 Author(s)
J. Xu Yu ; Dept. of Syst. Eng. & Eng. Manage., Chinese Univ. of Hong Kong, Shatin, China ; Hongjun Lu

Computing an n-attribute datacube requires the computation of an aggregate function over all groups generated by 2/sup n/ interrelated GROUP-BYs. In this paper, we focus on multi-cube computation. We extend the algorithms for single datacube computation to process multiple datacubes simultaneously. The issue we intend to explore is the memory utilization. We propose two multi-cube algorithms, namely, a sort-based algorithm and a hash-based algorithm. Different data skews and sparsities are investigated. Results from our extensive performance studies are reported.

Published in:

Database Systems for Advanced Applications, 2001. Proceedings. Seventh International Conference on

Date of Conference:

21-21 April 2001