Discovering Direct and Indirect Matches for Schema Elements

  • Authors:
  • Li Xu;David W. Embley

  • Affiliations:
  • -;-

  • Venue:
  • DASFAA '03 Proceedings of the Eighth International Conference on Database Systems for Advanced Applications
  • Year:
  • 2003

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Abstract

Automating schema matching is challenging. Previousapproaches (e.g. [9, 5]) to automating schema matchingfocus on computing direct element matches between twoschemas. Schemas, however, rarely match directly. Thus, tocomplete the task of schema matching, we must also compute indirect element matches. In this paper, we presenta framework for generating direct as well as many indirect element matches between a source schema and a targetschema. Recognizing expected data values associated withschema elements and applying schema-structure heuristicsare the key ideas to computing indirect matches. Experiments we have conducted over several real-world application domains show encouraging results, yielding over 90%precision and recall for both direct and indirect elementmatches.