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Common Errors & Integrity During DML — Test 1

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Question 1
Which error occurs when inserting a child row whose parent key does not exist?
FPSC - Database Administrator Model Papers -2026
Question 2
Which error occurs when deleting a parent row that still has child rows?
FPSC - Database Administrator Model Papers -2026
Question 3
Which error occurs when inserting NULL into a NOT NULL column?
FPSC - Database Administrator Model Papers -2026
Question 4
Which error indicates the net service name in a connect string cannot be resolved?
FPSC - Database Administrator Model Papers -2026