What is the third normal form for the entities and attributes?

The third normal form (3NF) is a concept in database normalization that helps ensure data integrity and minimize redundancy. It builds upon the first and second normal forms by removing transitive dependencies between non-key attributes. In the third normal form, all attributes in an entity are functionally dependent on the primary key, and no non-key attribute is functionally dependent on another non-key attribute. This means that each attribute is dependent only on the primary key and not on any other non-key attribute. By organizing data in this manner, the 3NF helps in reducing data duplication and update anomalies, leading to more efficient and reliable databases.

This mind map was published on 6 August 2023 and has been viewed 139 times.