Method for localizing execution or subqueries and determining collocation of execution of subqueries in a parallel database

Method for localizing execution or subqueries and determining collocation of execution of subqueries in a parallel database

A method for localizing execution of subqueries and determining collocation of execution of subqueries in a shared-nothing database. The concept of compatible partitioning is used to localize database operations in order to eliminate excess processes and communication, and thereby improve response t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KOLLAR LUBOR J, MALKEMUS TIMOTHY R, JHINGRAN ANANT D, PADMANABHAN SRIRAM K
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A method for localizing execution of subqueries and determining collocation of execution of subqueries in a shared-nothing database. The concept of compatible partitioning is used to localize database operations in order to eliminate excess processes and communication, and thereby improve response time and throughput for the database management system. The method reduces the number of process by reducing the number of nodes involved in processing a query and by combining multiple processes.