A Flexible Querying Framework (FQF): Some Implementation Issues
Fuzzy data are a common concept in today’s information society. Some data can be unknown, other data may be inaccurate or uncertain. Still, this fuzzy data must be accounted for in modern businesses and therefore must be stored. Fuzzy relational databases have been studied extensively over time, which resulted in numerous models and representation techniques, some of which have been implemented as software layers on top of database systems. Different query languages and end-user interfaces have been extended to perform flexible queries on both regular and fuzzy databases. In this paper, a framework is presented that not only enables flexible querying on the relational model, but on other database models as well, of which the most important are object-oriented database models. This framework, called FQF or Flexible Querying Framework, is built on the recently developed Java Data Objects (JDO) standard.
KeywordsQuery Language Aggregation Operator Fuzzy Data Simple Proposition Java Object
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