Optimization of queries on a repository based on constraints on how the data is stored in the repository
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United States of America Patent
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Apr 24, 2012
Grant Date -
Jan 11, 2007
app pub date -
Oct 3, 2005
filing date -
Jul 8, 2005
priority date (Note) -
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Abstract
Constraints that restrict how corresponding identifiable groups of files are stored in a database, are enforced on corresponding file data. In response to a query on any data from an identifiable group of files, the effect of the constraint on how the corresponding data is stored is determined. The original query is rewritten, based on the effect of the constraint, so that the rewritten query is directed to a particular subset of the data stored in the database. Consequently, the search space is restricted to an identifiable subset of the database and execution of the rewritten query is more efficient than execution of the original query.
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