System and method for implementing parallel operations in a database management system
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United States of America Patent
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Feb 15, 2000
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N/A
app pub date -
Sep 4, 1998
filing date -
Jan 20, 1993
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Abstract
A database management system for executing database operations in parallel by a plurality of nodes and a query processing method are described. The database management system contains a decision management node for deciding a distribution node for retrieving information so as to analyze a query received from an application program, generate a processing procedure for processing the query, and execute the process, and a join node for sorting, merging, and joining the information retrieved by the distribution node. When the query process is executed, the distribution node decided by the decision management node retrieves the information to be processed and the join node decided by the decision management node also obtains the result for the query from the retrieved information. The query result is outputted from an output node and transferred to the application program.
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