Which normal form describes a database table where no non-primary key attributes have functional dependencies on each other?

Correct option is D

Third Normal Form (3NF) is achieved when a database table has no transitive functional dependencies, meaning that non-primary key attributes do not depend on each other. This form reduces redundancy and enhances data integrity by ensuring that only primary key dependencies remain.
Important Key Points:
1. Eliminating Transitive Dependencies: 3NF removes dependencies between non-primary attributes, focusing on direct relationships with the primary key.
2. Data Integrity: By ensuring attributes depend only on the primary key, 3NF minimizes redundancy and improves data accuracy.
3. Normalization Process: Achieving 3NF is an essential step in the database normalization process to optimize data structure.
Knowledge Booster:
· First Normal Form (1NF): Ensures atomicity, meaning each field contains only one value, but does not address dependencies.
· Second Normal Form (2NF): Removes partial dependencies on the primary key but may still have transitive dependencies.
· Fourth Normal Form (4NF): Deals with multi-valued dependencies, a more advanced form beyond 3NF.
· Fifth Normal Form (5NF): Eliminates all redundancies and is often used in highly normalized databases, beyond typical needs.