Compressing Very Large Database Workloads for Continuous Online Index Selection

  • Authors:
  • Piotr Kołaczkowski

  • Affiliations:
  • Institute of Computer Science, Warsaw University of Technology,

  • Venue:
  • DEXA '08 Proceedings of the 19th international conference on Database and Expert Systems Applications
  • Year:
  • 2008

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Abstract

The paper presents a novel method for compressing large database workloads for purpose of autonomic, continuous index selection. The compressed workload contains a small subset of representative queries from the original workload. A single pass clustering algorithm with a simple and elegant selectivity based query distance metric guarantees low memory and time complexity. Experiments on two real-world database workloads show the method achieves high compression ratio without decreasing the quality of the index selection problem solutions.