The following table has two attributes A and C where A is the primary key and…

2005

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.

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The set of all tuples that must be additionally deleted to preserve referential integrity when the tuple (2, 4) is deleted is:

Answer: C. (5,2), (7,2) and (9,5)

  1. A.

    (3,4) and (6,4)

  2. B.

    (5,2) and (7,2)

  3. C.

    (5,2), (7,2) and (9,5)

  4. D.

    (3,4), (4,3) and (6,4)

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Correct answer: C

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