User specification of query access paths in a relational database management system
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United States of America Patent
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Aug 17, 1999
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N/A
app pub date -
Aug 29, 1997
filing date -
Aug 29, 1997
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Abstract
A relational data base management system includes a query processor that permits consideration of alternative user-specified access paths, which the processor will validate and incorporate into the query execution plan it otherwise generates. The optimizer of the query processor retrieves user-specified data that defines an access path for a query during bind operations. Any access path parameters that are invalid are replaced with processor-selected values.
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