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GATE | GATE-CS-2017 (Set 2) | Question 21
Consider the following tables T1 and T2:
In table T1, P is the primary key, Q is the foreign key referencing R in table T2 with on-delete cascade and on-update cascade. In table T2, R is the primary key and S is the foreign key referencing P in the table T1 with on-delete set NULL and on-update cascade. In order to delete record (3,8) from table, numbers of additional record that need to be deleted from table T1 is ______.
Note: This question appeared as Numerical Answer Type.
In table T1, P is the primary key, Q is the foreign key referencing R in table T2 with on-delete cascade and on-update cascade. In table T2, R is the primary key and S is the foreign key referencing P in the table T1 with on-delete set NULL and on-update cascade. In order to delete record (3,8) from table, numbers of additional record that need to be deleted from table T1 is ______.
Note: This question appeared as Numerical Answer Type.(A)
0
(B)
1
(C)
2
(D)
3
Answer
Please comment below if you find anything wrong in the above post
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