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The Third Normal Form (3NF) eliminates transitive dependencies, ensuring that every non-key attribute is directly dependent on the primary key and not on another non-key attribute. This simplifies data integrity and reduces redundancy. For instance, in a table with attributes EmployeeID, DepartmentID, and DepartmentName, dependency between DepartmentID and DepartmentName must be removed into a separate table, leaving only EmployeeID dependent on the DepartmentID. 3NF ensures a structured and efficient database design that minimizes update anomalies. Why Other Options Are Incorrect :
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