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Encyclopedia of Database Systems pp 2677–2680Cite as

Parallel Query Processing

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Synonyms

Multiprocessor query processing

Definition

Parallel query processing designates the transformation of high-level queries into execution plans that can be efficiently executed in parallel, on a multiprocessor computer. This is achieved by exploiting the way data is placed in parallel and the various execution techniques offered by the parallel database system. As in query processing, the transformation from the query into the execution plan to be executed must be both correct and yield efficient execution. Correctness is obtained by using well-defined mappings in some algebra, e.g., relational algebra, which provides a good abstraction of the execution system. Efficient execution is crucial for high-performance, e.g., good query response time or high query throughput. It is obtained by exploiting efficient parallel execution techniques and query optimization which selects the most efficient parallel execution plan among all equivalent plans.

The main forms of parallelism which...

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Recommended Reading

  1. Graefe G. Query evaluation techniques for large databases. ACM Comput Surv. 1993;25(2):73–170.

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  2. Kossmann D. The state of the art in distributed query processing. ACM Comput Surv. 2000;32(4):422–69.

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  3. Lanzelotte R, Valduriez P, Zait M, Ziane M. Industrial-strenght parallel query optimization: issues and lessons. Inf Syst. 1994;19(4):311–30.

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  4. Özsu MT, Valduriez P. Principles of distributed database systems. 2nd ed. Upper Saddle River: Prentice-Hall; 1999.

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  5. Valduriez P, Pacitti E. Parallel database systems. In: Hammer J, Scheider M, editors. Handbook of database technology. CRC; 2007.

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Author information

Authors and Affiliations

  1. INRIA and LINA, University of Nantes, Nantes, France

    Esther Pacitti

Authors
  1. Esther Pacitti
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Corresponding author

Correspondence to Esther Pacitti .

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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Pacitti, E. (2018). Parallel Query Processing. 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_1077

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