Encyclopedia of Database Systems

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

Index Tuning

  • Philippe BonnetEmail author
  • Dennis Shasha
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_197


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.


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. 1.
    Celko J. Joe celko’s SQL for smarties: advanced SQL programming. 3rd ed. San Fransisco: Morgan Kaufmann; 2005.zbMATHGoogle Scholar
  2. 2.
    Kimball R, Ross M. The data warehouse toolkit: the complete guide to dimensional modeling. 2nd ed. New York: Wiley; 2002.Google Scholar
  3. 3.
    Shasha D, Bonnet P. Database tuning: principles, experiments and troubleshooting techniques. San Fransisco: Morgan Kaufmann; 2002.Google Scholar
  4. 4.
    Tow D. SQL tuning. Sebastopol: O’Reilly; 2003.Google Scholar

Copyright information

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

Authors and Affiliations

  1. 1.Department of Computer ScienceIT University of CopenhagenCopenhagenDenmark
  2. 2.Department of Computer ScienceNew York UniversityNew YorkUSA

Section editors and affiliations

  • Dennis Shasha
    • 1
  1. 1.Dep. of Computer ScienceNew York Univ.New YorkUSA