Abstract
This paper proposes an approach aimed at obviating empty answers for a family of conjunctive queries involving value constraints. Contrary to the approaches based on a relaxation of the predicates involved in the query, the principle suggested here consists in replacing the query by a similar one which has been processed previously and whose answer is known to be non-empty. This technique thus avoids the combinatory explosion induced by classical relaxation-based approaches.
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Pivert, O., Jaudoin, H., Brando, C., Hadjali, A. (2010). A Method Based on Query Caching and Predicate Substitution for the Treatment of Failing Database Queries. In: Bichindaritz, I., Montani, S. (eds) Case-Based Reasoning. Research and Development. ICCBR 2010. Lecture Notes in Computer Science(), vol 6176. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14274-1_32
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DOI: https://doi.org/10.1007/978-3-642-14274-1_32
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