Which of the following principal can be stated as, No unmatched foreign key values should exist in the database? *
1 point
(A) Reltionship Integrity
(B) Referential Integrity
(C) Both (A) and (B)
(D) None of these
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Answer:
c both a and b
Explanation:
ok 8. My mother says, in her childhood petrol was 31 per litre. It is 65 per litre today.
By what percentage has the prices of petrol gone up?
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