Aspire Faculty ID #18452 · Topic: UGC NET Computer Science June 2023 (Paper II) · Just now
UGC NET Computer Science June 2023 (Paper II)

Consider the following statements:

A. A database design is in BCNF if each member of the set of relation schemas that constitutes the design is in BCNF

B. A BCNF schema can have transitive dependency

C. It is always possible to obtain a 3NF design without sacrificing a lossless join

D. There are multivalued dependencies in 4NF

Solution

A is correct because a database design is in BCNF when every relation schema in the design is in BCNF.


B is incorrect because BCNF removes dependency problems caused by non-super-key determinants.


C is correct because 3NF decomposition can be made lossless.


D is correct because 4NF deals with multivalued dependencies.

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