Relational Database Management System (RDBMS) Question:

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What is 3NF?

RDBMS Interview Question
RDBMS Interview Question

Answer:

A relation schema R is in 3NF if it is in 2NF and for every FD X --> A either of the following is true

► X is a Super-key of R.
► A is a prime attribute of R.

In other words, if every non prime attribute is non-transitively dependent on primary key.

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What is 2NF?What is BCNF (Boyce-Codd Normal Form)?