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Extending the database relational model to capture more meaning

Editor: David K. Hsiao Author:

E. F. CoddAuthors Info & Claims

ACM Transactions on Database Systems (TODS), Volume 4, Issue 4

Pages 397 - 434

https://doi.org/10.1145/320107.320109

Published: 01 December 1979 Publication History

Abstract

During the last three or four years several investigators have been exploring “semantic models” for formatted databases. The intent is to capture (in a more or less formal way) more of the meaning of the data so that database design can become more systematic and the database system itself can behave more intelligently. Two major thrusts are clear.

(1) the search for meaningful units that are as small as possible—atomic semantics;

(2) the search for meaningful units that are larger than the usual n-ary relation—molecular semantics.

In this paper we propose extensions to the relational model to support certain atomic and molecular semantics. These extensions represent a synthesis of many ideas from the published work in semantic modeling plus the introduction of new rules for insertion, update, and deletion, as well as new algebraic operators.

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Index Terms

Extending the database relational model to capture more meaning
1. Information systems
  1. Data management systems
    1. Database design and models
      1. Data model extensions
      2. Relational database model
    2. Query languages
      1. Relational database query languages

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Information & Contributors

Information

Published In

cover image ACM Transactions on Database Systems

ACM Transactions on Database Systems Volume 4, Issue 4

Dec. 1979

150 pages

ISSN:0362-5915

EISSN:1557-4644

DOI:10.1145/320107

Editor:
David K. Hsiao
Ohio State Univ., Columbus

Issue’s Table of Contents

Copyright © 1979 ACM.

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 December 1979

Published in TODS Volume 4, Issue 4

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