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The Computer Journal 1984 27(4):294-300; doi:10.1093/comjnl/27.4.294
© 1984 by British Computer Society
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A Database Architecture for Aggregate-Incomplete Data

D. S. Bowers *

School of Computing Studies and Accountancy, University of East Anglia, Norwich, UK

The problem is addressed of data which are not only incomplete, but also aggregate in nature. Some difficulties associated with maintaining the consistency of such data are illustrated. These problems arise in particular when it is required that both aggregate and simple data values should be stored. An architecture is proposed for a database management system to handle this class of data, which is termed aggregate-incomplete. A generalized materialization strategy is defined on the basis of the proposed architecture, and it is shown that the consistency problems are reduced to manageable proportions.

Received May 1983.

* School of Computing Studies and Accountancy, University of East Anglia, Norwich NR4 7TJ, UK


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