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East European Conference on Advances in Databases and Information Systems

ADBIS 2001: Advances in Databases and Information Systems pp 55–69Cite as

Enhancing an Extensible Query Optimizer with Support for Multiple Equivalence Types

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Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 2151))

Abstract

Database management systems are continuously being extended with support for new types of data and advanced querying capabilities. In large part because of this, query optimization has remained a very active area of research throughout the past two decades. At the same time, current commercial optimizers are hard to modify, to incorporate desired changes in, e.g., query algebras or transformation rules. This has led to a number of research contributions aiming to create extensible query optimizers, such as Starburst, Volcano, and OPT++.

This paper reports on a study that has enhanced Volcano to support a relational algebra with added temporal operators, such as temporal join and aggregation. These enhancements include the introduction of algorithms and cost formulas for the new operators, six types of query equivalences, and accompanying query transformation rules. The paper describes extensions to Volcano’s structure and algorithms and summarizes implementation experiences.

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Author information

Authors and Affiliations

  1. Department of Computer Science, Aalborg University, Denmark

    Giedrius Slivinskas & Christian S. Jensen

Authors
  1. Giedrius Slivinskas
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  2. Christian S. Jensen
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Editor information

Editors and Affiliations

  1. Institute of Mathematics and Informatics, Akademijos st. 4, 2600, Vilnius, Lithuania

    Albertas Caplinskas

  2. Department of Informatics Systems, University of Klagenfurt, Universitätsstr. 65, 9020, Klagenfurt, Austria

    Johann Eder

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© 2001 Springer-Verlag Berlin Heidelberg

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Slivinskas, G., Jensen, C.S. (2001). Enhancing an Extensible Query Optimizer with Support for Multiple Equivalence Types. In: Caplinskas, A., Eder, J. (eds) Advances in Databases and Information Systems. ADBIS 2001. Lecture Notes in Computer Science, vol 2151. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44803-9_6

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  • DOI: https://doi.org/10.1007/3-540-44803-9_6

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-42555-7

  • Online ISBN: 978-3-540-44803-7

  • eBook Packages: Springer Book Archive

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