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Approximate queries on distributed data marts

Author

Listed:
  • Francis A. Mendez Mediavilla
  • Hsun-Ming Lee

Abstract

The global business deals with a large amount of business data that are stored in potentially hundreds of distributed systems. It is challenging to allow end-users issue online analytical processing (OLAP) queries to retrieve suitable information through a worldwide network. This article presents the idea of using statistical methods to model federated data marts. Once data marts are modelled, reduced sets of distributed data can be imported and used to approximately reconstruct a federated data mart. Approximate queries can then be obtained from the reconstructed federated data mart. Advantages of this design include: quick query responses without accessing external servers; user-defined accuracy of the approximate query answers and network-efficient method for periodical updates. A proof of concept is presented using large data sets used for marketing analysis purposes.

Suggested Citation

  • Francis A. Mendez Mediavilla & Hsun-Ming Lee, 2009. "Approximate queries on distributed data marts," International Journal of Information and Decision Sciences, Inderscience Enterprises Ltd, vol. 1(4), pages 366-381.
    • Handle: RePEc:ids:ijidsc:v:1:y:2009:i:4:p:366-381
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