Entity-generating Schema Transformations for Entity-Relationship Models

Research output: Contribution in Book/Catalog/Report/Conference proceedingConference contribution

Abstract

The paper is a contribution to the problem of semantics-preserving schema restructuring. First, the notion of schema transformation is precisely analysed, its properties of reversibility are stated and an adequate notation is proposed. Then, the paper develops a general family of entity-generating transformations, i.e. operations that add/remove entity types in a schema. This generic transformation is proved to be able to generate not only a large number of popular E-R schema transformations, but also some powerful new ones.
Original languageEnglish
Title of host publicationProc. of the 10th Entity-Relationship Approach
Place of PublicationSan Mateo (CA)
PublisherNorth-Holland
Pages643-670
Number of pages28
Publication statusPublished - 1991

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Semantics

Keywords

  • schema transformation
  • database design
  • schema equivalence

Cite this

Hainaut, J-L. (1991). Entity-generating Schema Transformations for Entity-Relationship Models. In Proc. of the 10th Entity-Relationship Approach (pp. 643-670). San Mateo (CA): North-Holland.
Hainaut, Jean-Luc. / Entity-generating Schema Transformations for Entity-Relationship Models. Proc. of the 10th Entity-Relationship Approach. San Mateo (CA) : North-Holland, 1991. pp. 643-670
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Hainaut, J-L 1991, Entity-generating Schema Transformations for Entity-Relationship Models. in Proc. of the 10th Entity-Relationship Approach. North-Holland, San Mateo (CA), pp. 643-670.

Entity-generating Schema Transformations for Entity-Relationship Models. / Hainaut, Jean-Luc.

Proc. of the 10th Entity-Relationship Approach. San Mateo (CA) : North-Holland, 1991. p. 643-670.

Research output: Contribution in Book/Catalog/Report/Conference proceedingConference contribution

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AB - The paper is a contribution to the problem of semantics-preserving schema restructuring. First, the notion of schema transformation is precisely analysed, its properties of reversibility are stated and an adequate notation is proposed. Then, the paper develops a general family of entity-generating transformations, i.e. operations that add/remove entity types in a schema. This generic transformation is proved to be able to generate not only a large number of popular E-R schema transformations, but also some powerful new ones.

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Hainaut J-L. Entity-generating Schema Transformations for Entity-Relationship Models. In Proc. of the 10th Entity-Relationship Approach. San Mateo (CA): North-Holland. 1991. p. 643-670