Y A abcefg 1 10 хуz 2 11 feg 3 12 xyz 13 abcdefg q 10 Find out which of the following dependencies are valid or not. For each dependency, briefly write the reasons. 1. X -> YZ 2. X -> Z 3. XY -> A 4. A -> XYZ 5. YZ -> X 3.

Oracle 12c: SQL
3rd Edition
ISBN:9781305251038
Author:Joan Casteel
Publisher:Joan Casteel
Chapter1: Overview Of Database Concepts
Section: Chapter Questions
Problem 11MC: Which of the following has no repeating groups but can contain partial or transitive...
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X
Y
Z
A
abcefg
10
xyz
2
11
feg
3
12
xyz
2
13
abcdefg
3
10
Find out which of the following dependencies are valid or not. For each dependency, briefly write the reasons.
1.
X -> YZ
2.
X -> Z
3.
XҮ -> А
4.
A -> XYZ
5.
YZ -> X
Transcribed Image Text:X Y Z A abcefg 10 xyz 2 11 feg 3 12 xyz 2 13 abcdefg 3 10 Find out which of the following dependencies are valid or not. For each dependency, briefly write the reasons. 1. X -> YZ 2. X -> Z 3. XҮ -> А 4. A -> XYZ 5. YZ -> X
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