Discriminated answers and databases: fuzzy sets as a unifying expression means
P. Bosc, Olivier Pivert · 2003
The authors consider database management systems which have the capability of returning qualitative answers. Mainly two families of approaches have been investigated by researchers, the extension of Boolean queries and the definition of fuzzy queries. An overview of the solutions belonging to the first kind is given and it is shown that they are just special cases of queries supported by a fuzzy set based approach.>