Final answer:
A BCNF relation is not always in 3rd normal form. BCNF is a more stringent form of normalization compared to 3NF.
Step-by-step explanation:
A BCNF relation is not always in 3rd normal form. In fact, 3rd normal form (3NF) is a lower level of normalization compared to Boyce-Codd normal form (BCNF). BCNF is a more stringent form of normalization that eliminates all partial dependencies. It ensures that every non-key attribute is functionally dependent on the whole primary key. On the other hand, 3NF allows dependent attributes to be partially dependent on the primary key.