Processing database queries by returning results of a first query to subsequent queries
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United States of America Patent
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Jan 31, 2012
Grant Date -
May 28, 2009
app pub date -
Jan 10, 2009
filing date -
Oct 30, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Multiple database queries are satisfied with the same data in a manner that assures the data is current and without having to interrogate the database for each query. In a first embodiment, all queries that are received during the processing of a first query after interrogation of the database has begun for the first query are evaluated to determine whether the result set returned for the first query will satisfy the queries received during processing of the first query. If so, the result set returned for the first query is used to generate result sets for the subsequent compatible queries received during the processing of the first query. In a second embodiment, queries are delayed and grouped, and a new query is then processed for each group that returns a result set that satisfies all of the queries in the group. In both cases, the result set for one query is used to generate a result set for a different query.
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