Technique for detecting a shared temporal relationship of valid time data in a relational database management system
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United States of America Patent
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Feb 10, 2004
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app pub date -
Jan 28, 2000
filing date -
Jan 28, 2000
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Abstract
A method, apparatus, and article of manufacture for detecting shared temporal relationships in a relational database. In accordance with the present invention, an invocation of a shares operation that specifies a first event and a second event is received. In response to the invocation, a combination of temporal relationships between the first event and the second event are evaluated to determine whether (1) the second event ends after the first event starts and the first event ends after the second event starts or (2) the first and second events start and end at the same time.
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