Question 2 1. Given R (A, B, C, D, E, F) and the following set of functional dependencies: F = {A>EDC, B→D, E→CF, ED→A, EB→C} а. Show that AB is a primary key of R. b. Explain why R is not in the 2NF? c. Give a decomposition of R that is in 2NF.

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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Question 2
1. Given R (A, B, C, D, E, F) and the following set of functional dependencies:
F = {A→EDC, B→D, E→CF, ED→A, EB→C}
a. Show that AB is a primary key of R.
b. Explain why R is not in the 2NF?
c. Give a decomposition of R that is in 2NF.
d. Explain why R is not in 3NF?
Give a decomposition of R that is in the 3NF.
е.
Transcribed Image Text:Question 2 1. Given R (A, B, C, D, E, F) and the following set of functional dependencies: F = {A→EDC, B→D, E→CF, ED→A, EB→C} a. Show that AB is a primary key of R. b. Explain why R is not in the 2NF? c. Give a decomposition of R that is in 2NF. d. Explain why R is not in 3NF? Give a decomposition of R that is in the 3NF. е.
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