90. 1NF — example 2

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

What does First Normal Form (1NF) primarily require?

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Answer & Explanation

4 Answers

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Option A

Every table must be denormalized.

Additional Explanation

This option is incorrect for the stated requirement.

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Option B

Atomic values and no repeating groups in the relational representation.

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 C

Every column must be a foreign key.

Additional Explanation

This option is incorrect for the stated requirement.

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Option D

Every table must have exactly one row.

Additional Explanation

This option is incorrect for the stated requirement.