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integrity control DBMS

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An integrity control supported by a DBMS is:

(A) security

(B) GUI guards

(C) Range Control

(D) Substitute estimates
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Consider the join of a relation R with a relation S. If R has 100 tuples and S has 9 tuples then the maximum and minimum sizes of the join respectively under referential integrity constraint:- (A) 9 and 0 (B) 9 and 9 (C) 9+100 and 0 (D) 9*100 and 9
Consider the join of a relation R with a relation S. If R has 100 tuples and S has 9 tuples then the maximum and minimum sizes of the join respectively under referential ...
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