Prefix B-trees

  • Authors:
  • Rudolf Bayer;Karl Unterauer

  • Affiliations:
  • Technische Univ. München, Munich, West Germany;Technische Univ. München, Munich, West Germany

  • Venue:
  • ACM Transactions on Database Systems (TODS)
  • Year:
  • 1977

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Abstract

Two modifications of B-trees are described, simple prefix B-trees and prefix B-trees. Both store only parts of keys, namely prefixes, in the index part of a B*-tree. In simple prefix B-trees those prefixes are selected carefully to minimize their length. In prefix B-trees the prefixes need not be fully stored, but are reconstructed as the tree is searched. Prefix B-trees are designed to combine some of the advantages of B-trees, digital search trees, and key compression techniques while reducing the processing overhead of compression techniques.