Fuzzy databases have been introduced to deal with uncertain or incomplete information in many applications. The efficiency of processing fuzzy queries in fuzzy databases is a major concern. We provide techniques to unnest nested fuzzy queries of two ...
In many cases information is found to be naturally fuzzy or imprecise, that's why fuzzy query systems have become indispensable to represent and manage this information and especially facilitate interrogation to a non-expert user. In this paper, we ...
The role and properties of the division operator are well known in the framework of queries addressed to regular relational databases. However, Boolean queries may turn out to be too restrictive to answer some user needs and it is desirable to consider ...
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