Q. 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.
(A) 0
(B) 1
(C) 2
(D) 3
Answer: (A)
Explanation: