Generating and implementing indexes based on criteria set forth in queries
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United States of America Patent
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Jul 16, 2002
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N/A
app pub date -
Jun 4, 1999
filing date -
Jun 4, 1999
priority date (Note) -
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Abstract
A method and apparatus are provided for retrieving data from a table in a database. According to the method one or more indexes arc generated for use in processing a query by selecting values as unique key values from one or more columns in a table in a relational database system. Each unique key corresponds to a row in the table. The condition of whether a row in a table satisfies a search criterion, is represented by a bit in a bitstring or, in cases where the bitstring is segmented, in a segment of bitstring. The unique keys and corresponding segment of bitstring are then stored in an index.
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