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GATE CS 2022: Database- 2
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Question 1
Consider a relation R (A, B, C, D, E) with the following functional dependencies:
ABC → DE
D → AB
The number of super keys of R is:
Question 2
Which of the following statements about normal forms is false?
Question 3
From the following instance of relational schema R (A, B, C), We can conclude that:
Question 4
In domain relational calculus "there exist" can be represented as?
Question 5
Consider a relation R (A, B, C, D, E) with the following functional dependencies:
A → BC
C → E
B → D
E → A
The total numbers of super keys present in the relation are _______.
Question 6
For the given relation R (ABCDE) with the following functional dependencies
F= {A→BC, B→D, CD→E, E→A}
The number of candidate keys are____________.
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GATE & PSU CSDatabasesAug 3GATE & PSU CS