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Establishing arc consistency for multiple database views

  • Steven Battle
Advanced Database and Information Systems Methods 1
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1134)

Abstract

This paper introduces a class of problems where it is desirable to develop a number of potential search orders in advance. These problems emerge from a database environment in which the high volume of transactions means that pre-processing of the data can make a big difference to run-time performance. Furthermore, the kinds of queries that are made to this database are fairly stereotypical and are derived from a finite set of views of the database. The access path for each view may be expressed as a set of total variable orderings. Seen as a single partial ordering the question then arises as to how local consistency is to be established. Rather than enforcing consistency for each view separately the partial order is processed as a single structure. By organising the variables into groups of mutually dependent variables, this high level structure may be processed in a single DAC-like pass, while full arc-consistency is obtained for each sub-group.

Keywords

Directed Graph Boolean Network Input Combination Constraint Graph Local Consistency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Steven Battle
    • 1
  1. 1.University of the West of EnglandBristolUK

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