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The coast project: Design and implementation

  • Managing Change in Object Databases
  • Conference paper
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Deductive and Object-Oriented Databases (DOOD 1997)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 1341))

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Abstract

The Complex Object And Schema Transformation (COAST) project focuses on the design and implementation of a schema evolution support system using the versioning concept both at the instance and at the schema level of object-oriented database management systems (OODBMS).

The versioning approach to schema evolution offers a high degree of flexibility. In ordinary systems two elements depend heavily on the database schema, and therefore prevent schema changes in many cases: The database which is stored according to the types specified in the schema and the set of application programs on top of the schema which require certain properties from the instances. The basic idea of the versioning mechanism is to keep the old schema and database state as a version to allow continuous operation of existing application programs. This decouples the schema from existing instances and applications, and allows arbitrary schema updates at any time.

The main contributions of this paper include the development and integration of a module called Propagation Manager into a general OODBMS architecture and the explanation of its data structures and algorithms to allow deferred physical instance propagation.

http://www.dbis.informatik.uni-frankfurt.de/coast/

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Author information

Authors and Affiliations

  1. Fachbereich Informatik, Johann Wolfgang Goethe-Universität Frankfurt, Datenbanken und Informationssysteme, D-60054, Frankfurt am Main, Germany

    Sven-Eric Lautemann & Patricia Eigner

  2. IBM Global Services, PS Telco und Medien, D-60528, Frankfurt am Main, Germany

    Christian Wöhrle

Authors
  1. Sven-Eric Lautemann
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  2. Patricia Eigner
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  3. Christian Wöhrle
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Editor information

François Bry Raghu Ramakrishnan Kotagiri Ramamohanarao

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© 1997 Springer-Verlag Berlin Heidelberg

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Lautemann, SE., Eigner, P., Wöhrle, C. (1997). The coast project: Design and implementation. In: Bry, F., Ramakrishnan, R., Ramamohanarao, K. (eds) Deductive and Object-Oriented Databases. DOOD 1997. Lecture Notes in Computer Science, vol 1341. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-63792-3_18

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  • DOI: https://doi.org/10.1007/3-540-63792-3_18

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-63792-9

  • Online ISBN: 978-3-540-69647-6

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