152. one-to-many — scenario 4

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

How should a one-to-many relationship between departments and employees normally be represented?

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Answer & Explanation

4 Answers

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Option A

Store employee_id in departments as the only column.

Additional Explanation

This option is incorrect for the stated requirement.

Verified Correct Answer

Option B

Store the department primary key as a foreign key in employees, because many employees can reference one department.

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

Create one database per employee.

Additional Explanation

This option is incorrect for the stated requirement.

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Option D

Use a CROSS JOIN permanently.

Additional Explanation

This option is incorrect for the stated requirement.