Fuzzy Logic in Data Modeling : Semantics, Constraints, and Database Design

Semantics, Constraints, and Database Design

By: Guoqing Chen

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Hardcover | 1 December 2009

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244 Pages

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24.13 x 16.51 x 1.91

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This text addresses fundamental issues of fuzzy data modelling, such as fuzzy data representation, fuzzy integrity constraints, fuzzy conceptual modelling, and fuzzy database design. The purpose of introducing fuzzy logic in data modelling is to enhance the classical models such that uncertain and imprecise information can be represented and manipulated. Fuzzy data representation reflects how, where and to what extent fuzziness is incorporated into classical models. Fuzzy integrity constraints are a sort of fuzziness-involved business rules and semantic restrictions that need to be specified and enforced. Fuzzy conceptual modelling describes and treats high-level data concepts and related semantics in a fuzzy context, allowing the model to tolerate imprecision at different degrees. Fuzzy database design provides guidelines for how relation schemes of fuzzy databases should be formed and develops remedies to possible problems of data redundancy and update anomalies.

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Preface
Acknowledgements
Basic Concepts	p. 1
The Relational Data Model	p. 3
Conceptual Modeling with the Entity-Relationship Model	p. 19
Fuzzy Logic	p. 35
Fuzzy Conceptual Modeling	p. 59
Fuzzy ER Concepts	p. 61
Fuzzy EER Concepts	p. 79
Representation of Fuzzy Data and Constraints	p. 95
Fuzzy Data Representation	p. 97
Fuzzy Functional Dependencies (FFDs) as Integrity Constraints	p. 119
A FFD Inference System	p. 135
Fuzzy Database Design and Information Maintenance	p. 155
Scheme Decomposition and Information Maintenance	p. 157
Design of Fuzzy Databases to Avoid Update Anomalies	p. 179
Bibliography	p. 201
Appendix	p. 207
Index	p. 219
Table of Contents provided by Blackwell. All Rights Reserved.

Fuzzy Logic in Data Modeling : Semantics, Constraints, and Database Design

Semantics, Constraints, and Database Design

At a Glance

Hardcover

Shipping

How to return your order

Defective items

You Can Find This Book In

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