Risk-premium-based database-query optimization
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United States of America Patent
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Nov 25, 2014
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app pub date -
Jan 29, 2009
filing date -
Jan 29, 2009
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Abstract
Embodiments of the present invention are directed to query-optimization methods and systems that employ risk premiums assigned to database operations in order to increase the robustness and reliability of the evaluation and selection of query-execution plans for executing high-level database queries. Using risk-premium estimates, selection of query-execution plans that include potentially inefficient database operations and inefficient database-operation-execution sequences, often selected by currently available query-optimization methods and systems, are avoided.
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