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Encyclopedia of Database Systems pp 940–944Cite as

Database Clusters

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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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Author information

Authors and Affiliations

  1. Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

    Marta Mattoso

Authors
  1. Marta Mattoso
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Corresponding author

Correspondence to Marta Mattoso .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, GA, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, ON, Canada

    M. Tamer Özsu

Section Editor information

  1. INRIA, LINA, Nantes, France

    Patrick Valduriez

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Mattoso, M. (2018). Database Clusters. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_1075

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