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 |
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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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