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GATE | GATE-CS-2005 | Question 76
The following table has two attributes A and C where A is the primary key and C is the foreign key referencing A with on-delete cascade.
A C ----- 2 4 3 4 4 3 5 2 7 2 9 5 6 4The set of all tuples that must be additionally deleted to preserve referential integrity when the tuple (2,4) is deleted is:
(A)
(3,4) and (6,4)
(B)
(5,2) and (7,2)
(C)
(5,2), (7,2) and (9,5)
(D)
(3,4), (4,3) and (6,4)
Answer
Please comment below if you find anything wrong in the above post
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