UGC NET June-2019 CS Paper-2
October 6, 2023
NTA UGC NET DEC-2022 Paper-2
October 6, 2023
UGC NET June-2019 CS Paper-2
October 6, 2023
NTA UGC NET DEC-2022 Paper-2
October 6, 2023

UGC NET June-2019 CS Paper-2

Question 7
Which of the following key constraints is required for functioning of foreign key in the context of relational database?
A
Unique key
B
Primary key
C
candidate key
D
Check key
Question 7 Explanation: 
Foreign key is a key whose values depends on the primary key of a relation. So for the functioning of a foreign key in the context of relational database we need a primary key.
Correct Answer: B
Question 7 Explanation: 
Foreign key is a key whose values depends on the primary key of a relation. So for the functioning of a foreign key in the context of relational database we need a primary key.

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