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Vermeer, W.W.M. and Apers, P.M.G.
(1997)
Query modification in object-oriented database federations.
In: Proceedings of the Second IFCIS International Conference on Cooperative Information Systems (CoopIS 1997), 24-27 Jun 1997, Kiawah Island, South Carolina, USA.
pp. 193-202.
IEEE Computer Society.
ISBN 0-8186-7946-8
Full text available as:
Official URL: http://dx.doi.org/10.1109/COOPIS.1997.613816 AbstractWe discuss the modification of queries against an integrated view in a federation of object-oriented databases. We present a generalisation of existing algorithms for simple global query processing that works for arbitrarily defined integration classes. We then extend this algorithm to deal with object-oriented features such as queries involving path expressions and nesting. We show how properties of the OO-style of modelling relationships through object references can be exploited to reduce the number of subqueries necessary to evaluate such queries
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