Fuzzy relational database models generalize the classical relational database model by allowing uncertain and imprecise information to be represented and manipulated. In this article, we introduce fuzzy extensions of the normal forms for the similarity-based fuzzy relational database model. Within t
The integrity constraints for similarity-based fuzzy relational databases
✍ Scribed by Adnan Yazıcı; Mustafa İlker Sözat
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 259 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0884-8173
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✦ Synopsis
This paper first introduces a new definition for the conformance of tuples existing in a similarity-based fuzzy database relation. Then the formal definitions of fuzzy functional and multivalued dependencies are given on the basis of the conformance values presented here. These dependencies are defined to represent relationships between domains of the same relation that exist. The definitions of the fuzzy dependencies presented in this study allow a sound and complete set of inference rules. In this paper, we include examples to demonstrate how the integrity constraints imposed by these dependencies are enforced whenever a tuple is to be inserted or to be modified in a fuzzy database relation.
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