Some remarks on functional dependencies in relational datamodels

Thi Vu Duc and Thanh Le Thi: Some remarks on functional dependencies in relational datamodels. In: Acta cybernetica, (11) 4. pp. 345-352. (1994)

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Abstract

The concept of minimal family is introduced. We prove that this family and family of functional dependencies (FDs ) determine each other uniquely. A characterization of this family is presented. We show that there is no polynomial time algorithm finding a minimal family from a given relation scheme. We prove that the time complexity of finding a minimal family from a given relation is exponential in the number of attributes.

Item Type: Article
Journal or Publication Title: Acta cybernetica
Date: 1994
Volume: 11
Number: 4
ISSN: 0324-721X
Page Range: pp. 345-352
Language: English
Place of Publication: Szeged
Related URLs: http://acta.bibl.u-szeged.hu/38498/
Uncontrolled Keywords: Számítástechnika, Kibernetika
Additional Information: Bibliogr.: p. 351-352. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.02. Computer and information sciences
Date Deposited: 2016. Oct. 15. 12:26
Last Modified: 2022. Jun. 13. 12:16
URI: http://acta.bibl.u-szeged.hu/id/eprint/12538

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