Abstract
In order to deal with user preferences and imperfect information in databases, a proposed solution is to apply fuzzy logic. It has given birth to fuzzy logic based extensions of SQL, such as SQLf. We present a real life application of fuzzy querying that fulfils an actual need of academic personal at a high studies institution. This application helps professors in tests preparation and configuration based on the reutilization of previously proposed questions. These questions are stored in a relational database keeping tracks of some interesting measures about difficult, answer time, correction time and so on. Queries as well as user preferences are specified using a graphic user interface. Thus professors must not directly deal with a query language and fuzzy logic concepts, but with an intuitive interface. The application is built on the SQLfi fuzzy querying engine that is a logic layer on top of existing relational DBMS.
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