1
GATE CSE 1999
MCQ (Single Correct Answer)
+1
-0.3
Let $$R=(A,B,C,D,E,F)$$ be a relation scheme with the following dependencies: $$C \to F,\,E \to A,\,EC \to D,\,A \to B.$$ Which of the following is a key for $$R?$$
A
$$CD$$
B
$$EC$$
C
$$AE$$
D
$$AC$$
2
GATE CSE 1998
MCQ (Single Correct Answer)
+1
-0.3
Which normal form is considered adequate for normal relational database design?
A
$$2$$ $$NF$$
B
$$5$$ $$NF$$
C
$$4$$ $$NF$$
D
$$3$$ $$NF$$
3
GATE CSE 1994
True or False
+1
-0
State True or False with reason. There is always a decomposition into Boyce-codd normal form $$(BCNF)$$ that is lossless and dependency preserving.
A
TRUE
B
FALSE
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