Normalization based on fuzzy functional dependency in a fuzzy relational data model

Information Systems

Volumn 21, Issue 3, 1996, Pages 299-310

  Chen, Guoqing ^a   Kerre, Ettenne E ^b   Vandenbulcke, Jacques ^c  

^a Tsinghua University   (China)

^b GHENT UNIVERSITY   (Belgium)

^c UNIVERSITY OF LEUVEN   (Belgium)

Author keywords

Closeness Relations; Dependency Preserving and Lossless Join Decomposition; Fuzzy Functional Dependency (FFD); Fuzzy Normal Forms; q Keys

Indexed keywords

FUZZY SETS; INFORMATION RETRIEVAL SYSTEMS; RELATIONAL DATABASE SYSTEMS;

CLOSENESS RELATION; DEPENDENCY PRESERVING; FUZZY FUNCTIONAL DEPENDENCY (FFD); Q FUZZY THIRD NORMAL FORM (Q F3NF);

DATA STRUCTURES;

EID: 0030149446     PISSN: 03064379     EISSN: None     Source Type: Journal    
DOI: 10.1016/0306-4379(96)00016-6     Document Type: Article

References (17)

1. E. F. Codd. A relational model for large shared data banks. Comm. ACM, 13 (6): 377-387 (1970).
2. L. A. Zadeh. Fuzzy sets. Information and Control, Vol. 8, pp. 338-358 (1965).
3. L. A. Zadeh. Fuzzy sets as a basis for a theory of possibility. Fuzzy Sets & Systems, 1(1): 3-28 (1978).
4. B. P. Buckles and F. E. Petry. A fuzzy representation of data for relational databases. Fuzzy Sets & Systems, Vol. 7, pp. 213-226 (1982).
5. H. Prade and C. Testemale. Generalizing database relational algebra for the treatment of incomplete/uncertain information and vague queries. In Proceedings of 2nd NAFIPS Workshop, Schenectady, NY 1983, Information Science, Vol 34, pp. 115-143 (1984).
6. J. F. Baldwin and S. Q. Zhou. A fuzzy relational inference language. Fuzzy Sets & Systems, Vol. 14, pp. 155-174 (1984).
7. G. Q. Chen. A step towards the theory of fuzzy relational database design. In Proceedings of IFSA'91 World Congress, pp. 44-47, Brussels (1991).
8. G. Q. Chen, J. Vandenbulcke, and E. E. Kerre. A general treatment of data redundancy in a fuzzy relational data model. Journal of The American Society for Information Science, Vol. 43, pp. 304-311 (1992).
9. E. E. Kerre, and G. Q. Chen. An overview of fuzzy data models. In P. Bosc and J. Kacprzyk, editors, Studies in Fuzziness: fuzzy sets and possibility theory in database management systems, pp. 23-41, Physica-Verlag / Springer-Verlag (1995).
10. G. Q. Chen, E. E. Kerre, and J. Vandenbulcke. Fuzzy functional dependency and its axiomatic system. In Proceedings of International Conference on Information Processing and Management of Uncertainty (IPMU'92), pp. 313-316, Palma, Spain (1992).
11. G. Q. Chen, E. E. Kerre, and J. Vandenbulcke. A computational algorithm for the FFD closure and a complete axiomatization of fuzzy functional dependency (FFD). International Journal of Intelligent Systems, Vol. 9, pp. 421-439, (1994).
12. G. Q. Chen, E. E. Kerre, and J. Vandenbulcke. On the lossless-join decomposition in a fuzzy relational data model. In Proceedings of International Symposium on Uncertainty Modeling & Analysis (ISUMA '93), Maryland, USA, pp. 440-446 (1993).
13. G. Q. Chen, E. E. Kerre, and J. Vandenbulcke. The dependency-preserving decomposition and a testing algorithm in a fuzzy relational data model. Fuzzy Sets & Systems, Vol. 72, pp. 27-37 (1995).
14. G. Q. Chen. Fuzzy data modeling: perspectives, problems and solutions. In E.E.Kerre, editor, Introduction to the Basic Principles of Fuzzy Set Theory and Some of its Applications, pp. 294-343, Communication & Cognition, Gent, Belgium (1991).
15. K. V. S. V. N. Raju, and ARUN K. Majumdar. Fuzzy functional dependencies and lossless join decomposition of fuzzy relational database systems. ACM transactions on Database Systems, 13(2): 129-166 (1988).
16. G. Q. Chen. Fuzzy functional dependencies and a series of design issues of fuzzy relational databases. In P. Bosc and J. Kacprzyk, editors, Studies in Fuzziness: fuzzy sets and possibility theory in database management systems, pp. 166-185, Physica-Verlag (Springer-Verlag) (1995).
17. J. D. Ullman. Principles of Database and Knowledge-base Systems, Vol. 1, Computer Sciences Press Inc (1988).