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Information Sciences: an International Journal
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In most of the query languages, conjunctive and disjunctive combinations of conditions remain the usual way for aggregation. Fuzzy query languages also offer trade-off operators, such as means in order to compensate between elementary conditions. In this paper, we would like to introduce a new type of condition basically founded on the interaction between two predicates, thus enriching the panoply of tools the user is provided with and the power of query languages.