1.

Relation R with an associated set of functional dependencies, F, is decomposed into BCNF. The redundancy (arising out of functional dependencies) in the resulting set of relations is(a) Zero(b) More than zero but less than that of an equivalent 3NF decomposition(c) Proportional to the size of F+(d) IndeterminateThis question was addressed to me in an interview for internship.My question is based upon Materialized Views topic in portion Query Processing Techniques of Database Management

Answer»

The CORRECT option is (B) More than ZERO but less than that of an equivalent 3NF decomposition

To EXPLAIN: Redundancy in BCNF is low when compared to 3NF.



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