Choose the correct answerWhich normal form is considered adequate for normal relational database design?Options5NF2NF4NF3NF

To determine the correct answer, we need to understand the different normal forms in relational database design.

1. 1NF (First Normal Form): This normal form ensures that each column in a table contains only atomic values, meaning that it cannot be further divided into smaller pieces. It eliminates duplicate rows and establishes a primary key.

2. 2NF (Second Normal Form): In addition to meeting the requirements of 1NF, this normal form eliminates partial dependencies. It means that all non-key attributes must depend on the entire primary key, rather than just a part of it.

3. 3NF (Third Normal Form): This normal form builds upon 2NF and eliminates transitive dependencies. It means that non-key attributes should not depend on other non-key attributes.

4. 4NF (Fourth Normal Form): This normal form further refines the design by eliminating multi-valued dependencies. It means that a table should not contain multiple independent sets of multi-valued facts about an entity.

5. 5NF (Fifth Normal Form): Also known as Project-Join Normal Form (PJNF), this normal form deals with join dependencies. It ensures that a database is free from redundancy and anomalies caused by join operations.

Based on the options provided, the correct answer for the normal form considered adequate for normal relational database design is 3NF (Third Normal Form).