Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following sets of functional dependencies. A→B B→C C→D D→E E→ F F→ G G→ A ? A) ABC B) D C) EF D) All combinations of attributes are key
Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following sets of functional dependencies. A→B B→C C→D D→E E→ F F→ G G→ A ? A) ABC B) D C) EF D) All combinations of attributes are key
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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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following sets of functional dependencies.
A→B
B→C
C→D
D→E
E→ F
F→ G
G→ A ?
A) ABC
B) D
C) EF
D) All combinations of attributes are key
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