Fuzzy functional dependencies and lossless join decomposition of fuzzy relational database systems
ACM Transactions on Database Systems (TODS)
A fuzzy database-query language
Information Systems
GEFRED: a generalized model of fuzzy relational databases
Information Sciences—Informatics and Computer Science: An International Journal
Fuzzy division in fuzzy relational databases: an approach
Fuzzy Sets and Systems
A Server for Fuzzy SQL Queries
FQAS '98 Proceedings of the Third International Conference on Flexible Query Answering Systems
Entity-Relationship Modeling and Fuzzy Databases
Proceedings of the Second International Conference on Data Engineering
Prioritised fuzzy constraint satisfaction problems: axioms, instantiation and validation
Fuzzy Sets and Systems - Theme: Multicriteria decision
Artificial Intelligence - Special issue: Fuzzy set and possibility theory-based methods in artificial intelligence
Normalization and lossless join decomposition of similarity-based fuzzy relational databases
International Journal of Intelligent Systems
A design methodology for databases with uncertain data
SSDBM'1994 Proceedings of the 7th international conference on Scientific and Statistical Database Management
Fuzzy Databases: Modeling, Design, and Implementation
Fuzzy Databases: Modeling, Design, and Implementation
Extension of the expected value method for multiple attribute decision making with fuzzy data
Knowledge-Based Systems
Schur-concave triangular norms: Characterization and application in pFCSP
Fuzzy Sets and Systems
Fuzzy rough set based attribute reduction for information systems with fuzzy decisions
Knowledge-Based Systems
Mining fuzzy specific rare itemsets for education data
Knowledge-Based Systems
SQLf: a relational database language for fuzzy querying
IEEE Transactions on Fuzzy Systems
Formalising pfsql queries using ŁΠ fuzzy logic
Mathematical Structures in Computer Science
Fuzzy XML and prioritized fuzzy XQuery with implementation
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology
Hi-index | 0.00 |
Many years of research related to fuzzy logic and fuzzy set theory extensions to relational databases have not lead to stable implementations, standardized languages or fuzzy relational database application development tools and methods. The main goal of this paper is the modelling and the implementation of a set of tools that allow usage of fuzzy logic enriched with priorities in relational database applications. In order to achieve that goal, at first, the relational data model is extended with the elements of fuzzy set theory. After that, a fuzzy extension of the SQL query language, called the PFSQL, is defined. An interpreter for that language is integrated inside an implementation of the fuzzy JDBC driver. An implementation of the CASE tool for modelling of fuzzy relational database schemas rounds up a set of tools for the implementation of Java fuzzy database applications. In this sense, this paper presents a step towards a methodology for the fuzzy relational database application development.