This article presents various forms of fuzzy queries with a particular emphasis of two different approaches to the representation of fuzziness, a detailed analysis of these queries and their conversion into standard SQL queries using Oracle 11g XE. The actions discussed above point out to the methods of obtaining fuzzy information from the database that have been easy to implement. A qualitative and quantitative study about the use of fuzzy queries on relational databases has been included in this article, as well. This research takes into account the fact that obtaining this type of information is not supported by any commercial database management system.

This article presents various forms of fuzzy queries with a particular emphasis of two different approaches to the representation of fuzziness, a detailed analysis of these queries and their conversion into standard SQL queries using Oracle 11g XE. The actions discussed above point out to the methods of obtaining fuzzy information from the database that have been easy to implement. A qualitative and quantitative study about the use of fuzzy queries on relational databases has been included in this article, as well. This research takes into account the fact that obtaining this type of information is not supported by any commercial database management system.