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c) Consider the following relation R with the functional dependencies: AC B, AD E, AB C, E F, ВС —А, and B-D. R A B C D E F 1 3 4 6. 7 8 9. 10 Is {AB, BC, ABDE, EF} a lossless-join decomposition? Explain. Is the decomposition {ABC, ACDE, ADF} lossless join? Determine the projection of the set of functional dependencies of R onto ABC, ACDE, and a) b) c) ADF. Is this decomposition dependency preserving? d) Decompose R into a set of 3NF relations, that is lossless join and dependency preserving.

c) Consider the following relation R with the functional dependencies: AC B, AD E, AB C, E F, ВС —А, and B-D. R A B C D E F 1 3 4 6. 7 8 9. 10 Is {AB, BC, ABDE, EF} a lossless-join decomposition? Explain. Is the decomposition {ABC, ACDE, ADF} lossless join? Determine the projection of the set of functional dependencies of R onto ABC, ACDE, and a) b) c) ADF. Is this decomposition dependency preserving? d) Decompose R into a set of 3NF relations, that is lossless join and dependency preserving.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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c) Consider the following relation R with the functional dependencies: AC-→B, AD E, AB→C, E F, ВС -А, and B-D. RA B C D E F 1 2 3 4 5 6. 7 8 10 b) c) Is {AB, BC, ABDE, EF} a lossless-join decomposition? Explain. Is the decomposition {ABC, ACDE, ADF} lossless join? Determine the projection of the set of functional dependencies of R onto ABC, ACDE, and ADF. Is this decomposition dependency preserving? d) Decompose R into a set of 3NF relations, that is lossless join and dependency preserving.
Transcribed Image Text:c) Consider the following relation R with the functional dependencies: AC-→B, AD E, AB→C, E F, ВС -А, and B-D. RA B C D E F 1 2 3 4 5 6. 7 8 10 b) c) Is {AB, BC, ABDE, EF} a lossless-join decomposition? Explain. Is the decomposition {ABC, ACDE, ADF} lossless join? Determine the projection of the set of functional dependencies of R onto ABC, ACDE, and ADF. Is this decomposition dependency preserving? d) Decompose R into a set of 3NF relations, that is lossless join and dependency preserving.
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