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The Computer Journal 1987 30(2):157-162; doi:10.1093/comjnl/30.2.157
© 1987 by British Computer Society
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Implementation of a Prototype for PRECI*

S. M. Deen1 *, R. R. Amin1 and M. C. Taylor1 *

1 Department of Computer Science, University of Keele, Keele, Staffs ST5 5BG, UK, 2 Department of Computing Science, University of Aberdeen, King's College, Old Aberdeen AB9 2UB, UK

PRECI* provides a generalised architecture for a decentralised distributed database system capable of supporting a heterogeneous collection of pre-existing nodes. It permits data replication, subject to nodal access controls, and a number of user facilities, including both location-transparent and location-dependent queries in a relational language.

A subset of these features, dealing with distributed queries in a decentralised environment, has been implemented using two homogeneous PRECI nodes within the same computer. This system is written in C under Unix, as described in this paper.

Received February 1986.

* Now at Department of Computer Science, Univeristy of Keele, Keele, Staffs ST5 5BG.

§ Department of Computing Science, University of Aberdeen, King's College, Old Aberdeen AB9 2UB


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