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Publication
SIGMOD/PODS/ 1991
Conference paper
Constraint-based query optimization for spatial databases
Abstract
We present a method for converting a system of multivariate Boolean constraints into a sequence of nnivariafe range queries of he type supported by current spatial databases. The method relies on the transformation of a Boolean constraint system into triangular form. We extend previous results in this area by considering negative as well as positive constraints. We also present a method to approximate triangular Boolean constraints by bounding box constraints.