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A New Framework for Designing Schema Mappings

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In Search of Elegance in the Theory and Practice of Computation

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 8000))

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Abstract

One of the fundamental tasks in information integration is to specify the relationships, called schema mappings, between database schemas. Schema mappings specify how data structured under a source schema is to be transformed into data structured under a target schema. The design of schema mappings is usually a non-trivial and time-intensive process and the task of designing schema mappings is exacerbated by the fact that schemas that occur in real life tend to be large and heterogeneous. Traditional approaches for designing schema mappings are either manual or performed through a user interface from which a schema mapping is interpreted from correspondences between attributes of the source and target schemas. These correspondences are either specified by the user or automatically derived by applying schema matching on the two schemas.

In this paper, we examine an alternative approach that allows a user to follow the “divide-design-merge” paradigm for specifying a schema mapping. The user can choose to independently design schema mappings for smaller portions of the source and target schema. Afterwards, the user can interact with the system to refine and further design schema mappings through the use of data examples. Finally, in the merge phase, a global schema mapping is generated through the correlation of the individual schema mappings.

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Author information

Authors and Affiliations

  1. IBM Research - Almaden, San Jose, CA, USA

    Bogdan Alexe

  2. University of California, Santa Cruz, CA, USA

    Wang-Chiew Tan

Authors
  1. Bogdan Alexe
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  2. Wang-Chiew Tan
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Editor information

Editors and Affiliations

  1. Department of Computer and Information Science, University of Pennsylvania, 3330 Walnut St., 19104, Philadelphia, PA, USA

    Val Tannen

  2. School of Computing, National University of Singapore, 13 Computing Drive, 117417, Singapore, Singapore

    Limsoon Wong

  3. School of Informatics, The University of Edinburgh, 10 Crichton Street, EH8 9AB, Edinburgh, UK

    Leonid Libkin , Wenfei Fan  & Michael Fourman ,  & 

  4. Department of Computer Science, University of California, 1156 High Street, 95064, Santa Cruz, CA, USA

    Wang-Chiew Tan

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Alexe, B., Tan, WC. (2013). A New Framework for Designing Schema Mappings. In: Tannen, V., Wong, L., Libkin, L., Fan, W., Tan, WC., Fourman, M. (eds) In Search of Elegance in the Theory and Practice of Computation. Lecture Notes in Computer Science, vol 8000. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-41660-6_4

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  • DOI: https://doi.org/10.1007/978-3-642-41660-6_4

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-41659-0

  • Online ISBN: 978-3-642-41660-6

  • eBook Packages: Computer ScienceComputer Science (R0)

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