Research Output

Using a metadata software layer in information systems integration.

  A federated information system requires that multiple (often heterogenous) information systems are integrated to an extent that they can share data. This shared data often takes the form of a federated schema, which is a global view of data taken from distributed sources. One of the issues faced in the engineering of a federated schema is the continuous need to extract meta data from cooperating systems. Where cooperating systems employ an object-oriented common model to interact with each other, this requirement can become a problem due to the type and complexity of meta data queries. In this research, we specified and implemented a meta data software layer in the form of a high-level query interface for the ODMG schema repository, in order to simplify the task of integration system engineers. Two clear benefits have emerged: the reduced complexity of meta data queries during system integration (and federated schema construction) and a reduced learning curve for programmers who need to use the ODMG schema repository

  • Publication Status:


  • Publisher


  • Library of Congress:

    QA76 Computer software

  • Dewey Decimal Classification:

    005 Computer programming, programs & data


Roantree, M., Kennedy, J. & Barclay, P. J. (2001). Using a metadata software layer in information systems integration. In Advanced systems engineering: CAiSE'01 - Software Engineering meets Information Systems Engineering, 299-314. ISBN 3 540 42215 3



Federated information systems; Distributed databases; Object-oriented databases; ODMG repository; High level query interface; Metadata software layer;

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