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Poosala, 1997 - Google Patents

Histogram-based estimation techniques in database systems

Poosala, 1997

Document ID
17378517919957369931
Author
Poosala V
Publication year

External Links

Snippet

Many commercial database management systems maintain histograms to summarize the contents of relations in order to perform efficient estimation of query result sizes and access plan costs. The accuracy of these estimates is often of critical importance. But, there has …
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Classifications

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    • G06F17/30286Information retrieval; Database structures therefor; File system structures therefor in structured data stores
    • G06F17/30386Retrieval requests
    • G06F17/30424Query processing
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    • G06F17/30424Query processing
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    • G06F17/30486Unary operations; data partitioning operations
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    • G06COMPUTING; CALCULATING; COUNTING
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    • G06F17/30584Details of data partitioning, e.g. horizontal or vertical partitioning
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