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Encyclopedia of Database Systems pp 1851–1854Cite as

Index Tuning

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Definition

Index Tuning is concerned with when and how to construct an index.

Historical Background

When relational models were first introduced, customers complained that vendors had introduced them to slowed down customer applications in order to make the customers buy more hardware. Vendors and researchers responded to the performance challenge by incorporating existing data structures (notably B-trees and hash structures) and improving many new ones (notably bit vectors and multi-dimensional indexes). The decision of which data structures to create was left to the user. This entry concerns that decision.

Foundations

An index is a data structure plus a method of arranging the data tuples in the table (or other kind of collection object) being indexed. The syntax for constructing indexes is discussed elsewhere. This entry presents the tuning considerations.

Two data structures are most often used in practice for indexes: B+-trees and Hash structures. Of these, B+-trees are used the...

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Recommended Reading

  1. Celko J. Joe celko’s SQL for smarties: advanced SQL programming. 3rd ed. San Fransisco: Morgan Kaufmann; 2005.

    MATH  Google Scholar 

  2. Kimball R, Ross M. The data warehouse toolkit: the complete guide to dimensional modeling. 2nd ed. New York: Wiley; 2002.

    Google Scholar 

  3. Shasha D, Bonnet P. Database tuning: principles, experiments and troubleshooting techniques. San Fransisco: Morgan Kaufmann; 2002.

    Google Scholar 

  4. Tow D. SQL tuning. Sebastopol: O’Reilly; 2003.

    Google Scholar 

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Author information

Authors and Affiliations

  1. Department of Computer Science, IT University of Copenhagen, Copenhagen, Denmark

    Philippe Bonnet

  2. Department of Computer Science, New York University, New York, NY, USA

    Dennis Shasha

Authors
  1. Philippe Bonnet
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  2. Dennis Shasha
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Corresponding author

Correspondence to Philippe Bonnet .

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. Dep. of Computer Science, New York Univ., New York, NY, USA

    Dennis Shasha

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Cite this entry

Bonnet, P., Shasha, D. (2018). Index Tuning. 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_197

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