101. 2NF — example 3

DBMS Published 30 Sept 2026 Updated 30 Sept 2026 0 Views Verified

What does 2NF add beyond 1NF?

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Answer & Explanation

4 Answers

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Option A

It removes every foreign key.

Additional Explanation

This option is incorrect for the stated requirement.

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Option B

It requires every table to have JSON.

Additional Explanation

This option is incorrect for the stated requirement.

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Option C

It removes partial dependency of a non-key attribute on part of a composite candidate key.

Additional Explanation

Correct implementation. Prefer parameterized queries in application code, validate affected rows for UPDATE/DELETE, and use transactions for related writes.

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Option D

It removes all transitive dependencies automatically.

Additional Explanation

This option is incorrect for the stated requirement.