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Definition of External Schemas in ODMG Databases

  • Conference paper
OOIS 2000

  • 79 Accesses

Abstract

ODMG 3.0 (January 2000) does not specify how to define external schemas in object oriented databases and only offers a very basic mechanism for defining views, called named queries. In this paper, a system and a language for defining external schemas in ODMG databases are presented. Both are based on a mechanism that avoids the generation of classes that are not necessary in external schemas. The proposed language is an extension of ODMG ODL and allows the definition of external schemas using the ODMG named queries for defining derived classes. Nevertheless, the proposed language is independent of the derived classes definition mechanism used.

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Author information

Authors and Affiliations

  1. Departamento de Lenguajes y Computación, Universidad de Almería, Carretera Sacramento S/N, 04120, Almería, Spain

    Manuel Torres

  2. Departamento de Lenguajes y Sistemas Informáticos, Universidad de Granada, Avenida Andalucía, 38, 18071, Granada, Spain

    José Samos

Authors
  1. Manuel Torres
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  2. José Samos
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Editor information

Editors and Affiliations

  1. School of Computing, Information Systems and Mathematics, South Bank University, 103 Borough Road, London, UK

    Dilip Patel  & Shushma Patel  & 

  2. School of Computing, London Guildhall University, 100 Minories, London, UK

    Islam Choudhury

  3. Department of Information Systems and Computing, Brunel University, Uxbridge, London, UK

    Sergio de Cesare

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© 2001 Springer-Verlag London Limited

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Torres, M., Samos, J. (2001). Definition of External Schemas in ODMG Databases. In: Patel, D., Choudhury, I., Patel, S., de Cesare, S. (eds) OOIS 2000. Springer, London. https://doi.org/10.1007/978-1-4471-0299-1_1

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  • DOI: https://doi.org/10.1007/978-1-4471-0299-1_1

  • Publisher Name: Springer, London

  • Print ISBN: 978-1-85233-420-8

  • Online ISBN: 978-1-4471-0299-1

  • eBook Packages: Springer Book Archive

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