All parts of this question use the relation R = (ABCDEG) with the set of functional dependencies F = {A→BC, AD→G, C→D, G→C, BC→BDEG}. Use 3NF synthesis to find a 3NF decomposition of R that is both lossless-join and dependency-preserving. You must show all FDs that hold on each resulting relation. As a final step, minimize the number of relations in your decomposition, while still ensuring that each relation is in 3NF. 2.Give an example of a query that would run more slowly in your decomposition from above than in the original relation R. You must explain your answer.
All parts of this question use the relation R = (ABCDEG) with the set of functional dependencies F = {A→BC, AD→G, C→D, G→C, BC→BDEG}. Use 3NF synthesis to find a 3NF decomposition of R that is both lossless-join and dependency-preserving. You must show all FDs that hold on each resulting relation. As a final step, minimize the number of relations in your decomposition, while still ensuring that each relation is in 3NF. 2.Give an example of a query that would run more slowly in your decomposition from above than in the original relation R. You must explain your answer.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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All parts of this question use the relation R = (ABCDEG)
with the set of functional dependencies F = {A→BC, AD→G, C→D, G→C, BC→BDEG}.
- Use 3NF synthesis to find a 3NF decomposition of R that is both lossless-join and dependency-preserving. You must show all FDs that hold on each resulting relation. As a final step, minimize the number of relations in your decomposition, while still ensuring that each relation is in 3NF.
2.Give an example of a query that would run more slowly in your decomposition from above than in the original relation R. You must explain your answer.
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