METHOD AND APPARATUS FOR REDUCING QUERY PROCESSING TIME BY DYNAMICALLY CHANGING ALGORITHMS AND COMPUTER READABLE MEDIUM THEREFOR
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United States of America Patent
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Oct 26, 2017
app pub date -
May 27, 2016
filing date -
Apr 25, 2016
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Abstract
Provided is a method for reducing a query processing time by dynamically changing algorithms in a database management system (DBMS). The method includes: receiving a database query from a client; executing a first performance test for a plurality of respective execution algorithms for performing an operation associated with the query; executing an operation for processing the query by using a first execution algorithm among the plurality of execution algorithms based on a result of the first performance test; and while initially executing the operation for processing the query by using the first execution algorithm, executing a second performance test for the plurality of respective execution algorithms for performing the operation associated with the query; and dynamically deciding a point of time when the first execution algorithm is changed to a second execution algorithm among the plurality of execution algorithms in processing the query based on a result of the second performance test.
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