The dependency preservation decomposition is a property to decompose database schema D, in which each functional dependency X®Y specified in F,
A. appeared directly in one of the relation schemas Ri in the decomposed D.
B. could be inferred from dependencies that appear in some Ri.
C. both (A) and (B)
D. None of these
Answer:C
The dependency preservation decomposition is a property to decompose database schema D, in which each functional dependency X®Y specified in F,
A. appeared directly in one of the relation schemas Ri in the decomposed D. B. could be inferred from dependencies that appear in some Ri. C. both (A) and (B) D. None of these