The Arc-Tree: A Novel Symmetric Access Method for Multidimensional Data

  • Authors:
  • Dimitris G. Kapopoulos;Michael Hatzopoulos

  • Affiliations:
  • -;-

  • Venue:
  • ADBIS '01 Proceedings of the 5th East European Conference on Advances in Databases and Information Systems
  • Year:
  • 2001

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Abstract

In this paper we present a novel symmetric and dynamic access method, the Arc-tree, for organizing multidimensional data. The Arc-tree uses a new space-filling curve and a partition scheme that is based on bit interleaving. It divides the data space into non-overlapping arc partitions through splits imposed by meeting planes and co-centric spheres that alternate in a fixed order. The proposed structure is k-d-cut, fixed and brickwall. The Arc-tree inco rporates the properties of metric spaces and B-trees, is independent of data distribution and excludes the storage of empty partitions. Moreover, for a given data space the partitions are identical regardless of the order of insertions and deletions. The Arc-tree arranges partitions around a starting point and this makes the method especially suitable for applications where distance queries and searches on planes that intersect this point are concerned. We present the Arc-tree, describe its dynamic behavior and provide algorithms that prune the set of candidates to qualify partitions for several types of queries.