What are the three main stages of normalization collectively called?

• A. First Normal Form
• B. Second Normal Form
• C. Third Normal Form
• D. Normal Forms

Answer: (D)

Normalization in relational databases is the process of structuring data to minimize redundancy and update anomalies by organizing data into related tables. The three commonly studied stages—First Normal Form, Second Normal Form, and Third Normal Form—are referred to collectively as Normal Forms. Using this plural term signals the entire sequence of standards, not any single form. Each form imposes its own rules—for example, 1NF requires atomic column values, 2NF removes partial dependencies, and 3NF eliminates transitive dependencies—together guiding how data should be organized.