Abstract
This paper deals with imprecise querying of regular relational databases which is intended to make database management systems more powerful. A special emphasis is put on flexible queries addressed to regular databases. We first show that when comparing various attempts made to deal with such queries, the fuzzy set approach turns out to generalize the other solutions. Secondly, we present some key features of SQLf, an extension of the SQL query language. SQLf allows the expression of a wide range of flexible queries whose interpretation is based on fuzzy set theory.
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© 1994 Springer-Verlag Berlin Heidelberg
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Bosc, P., Lietard, L., Pivert, O. (1994). Soft querying, a new feature for database management systems. In: Karagiannis, D. (eds) Database and Expert Systems Applications. DEXA 1994. Lecture Notes in Computer Science, vol 856. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-58435-8_229
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DOI: https://doi.org/10.1007/3-540-58435-8_229
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