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This paper addresses the problem of efficient processing of XQueries in single-user relational environment where the queries are formulated using a user-friendly GUI. The paper takes a novel and non-traditional approach to improving query performance by prefetching data during the formulation of a query. The latency offered by GUI-based query formulation is utilized to prefetch portions of the query results. To realize this, the paper presents an algorithm for prefetching based on data synopses statistics and GUI actions during visual query formulation. Experimental evaluation indicates that prefetching is viable as the combined time taken by all the prefetching operations is not significantly more than normal query execution time.

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Format:PDFSize:616 KB
Date:Feb 2007
Pages:15

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