1
GATE CSE 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
A prime attribute of a relation scheme $$R$$ is an attribute that appears
A
In all candidate keys of $$R$$
B
In some candidate key of $$R.$$
C
In a foreign key of $$R.$$
D
Only in the primary key of $$R.$$
2
GATE CSE 2014 Set 2
Numerical
+1
-0
The maximum number of superkeys for the relation schema $$R(E, F, G, H)$$ with $$E$$ as key is ______.
Your input ____
3
GATE CSE 2012
MCQ (Single Correct Answer)
+1
-0.3
Which of the following is TRUE?
A
Every relation in $$3NF$$ is also in $$BCNF$$
B
A relation $$R$$ is in $$3NF$$ if every non-prime attribute of $$R$$ is fully functionally dependent on every key of $$R$$
C
Every relation in $$BCNF$$ is also in $$3NF$$
D
No relation can be in both $$BCNF$$ and $$3NF$$
4
GATE CSE 2005
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following statements about normal forms is FALSE?
A
$$BCNF$$ is stricter than $$3NF$$
B
Lossless, dependency $$-$$ preserving decomposition into $$3NF$$ is always possible
C
Lossless, dependency - preserving decomposition into $$BCNF$$ is always possible
D
Any relation with two attributes is in $$BCNF$$
GATE CSE Subjects
Software Engineering
Web Technologies
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NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12