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Is the following student table in 3NF (Third Normal Form)? Justify your answer.
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The table is in 3NF (Third Normal Form).
Here's the justification:
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First Normal Form (1NF): The table is in 1NF because all attributes (
StudNo,StudName,Gender,DateOfBirth) contain atomic (single) values, and there are no repeating groups. Each row is unique, withStudNoserving as the primary key. -
Second Normal Form (2NF): The table is in 2NF because it is already in 1NF, and all non-key attributes (
StudName,Gender,DateOfBirth) are fully functionally dependent on the primary key (StudNo). Since the primary key is a single attribute (StudNo), there cannot be any partial dependencies. -
Third Normal Form (3NF): The table is in 3NF because it is in 2NF, and there are no transitive dependencies. This means no non-key attribute is dependent on another non-key attribute. All non-key attributes (
StudName,Gender,DateOfBirth) are directly dependent only on the primary key (StudNo).
Therefore, the table satisfies all conditions for 3NF.
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