Explanation: Third normal form (3NF) relaxes this constraint slightly by allowing certain nontrivial functionaldependencieswhose left side is not a superkey. 7. If an attribute of a composite key is dependent on an attribute of the other composite key, a normalization called _____ is needed.
A. DKNF
B. BCNF
C. Fourth
D. Third
Answer:A
Explanation: Third normal form (3NF) relaxes this constraint slightly by allowing certain nontrivial functionaldependencieswhose left side is not a superkey. 7. If an attribute of a composite key is dependent on an attribute of the other composite key, a normalization called _____ is needed.
A. DKNF B. BCNF C. Fourth D. Third
Explanation: BCNF eliminates all redundancy that can be discovered based on functional dependencies. 8. The term for information that describes what type of data is available in a database is: