Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Database Clusters

  • Marta Mattoso
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1075

Synonyms

DBC; Middleware for parallel query processing

Definition

A database cluster (DBC) is a parallel database management solution. A DBC uses a standard parallel computer cluster (a cluster of PC nodes) to run a sequential Database Management System (DBMS) instance at each node. A DBC middleware is a software layer between a database application and the DBC. Such middleware is responsible for providing parallel query processing on top of the DBC. It intercepts queries from applications and coordinates distributed and parallel query execution by taking advantage of the DBC. The DBC term comes from an analogy with the term PC cluster, which is a solution for parallel processing by assembling sequential PCs. In a PC cluster there is no need for special hardware to provide parallelism as opposed to parallel machines or supercomputers. In the same way, a DBC takes advantage of off-the-shelf sequential DBMS to run parallel queries. There is no need for special software or hardware as...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Federal University of Rio de JaneiroRio de JaneiroBrazil

Section editors and affiliations

  • Patrick Valduriez
    • 1
  1. 1.INRIALINANantesFrance