Answer & Explanation

4 Answers
Verified

Option A

Every transaction must contain exactly one statement.
Additional Explanation
This option is incorrect for the stated requirement.
Sarkari Resultess
Editorial Answer 1
Verified Correct Answer

Option B

A transaction's operations are treated as one unit: it should not leave a partial result when the transaction is rolled back.
Additional Explanation
Correct implementation. Prefer parameterized queries in application code, validate affected rows for UPDATE/DELETE, and use transactions for related writes.
Sarkari Resultess
Editorial Answer 2
Verified

Option C

Every SELECT locks every table forever.
Additional Explanation
This option is incorrect for the stated requirement.
Sarkari Resultess
Editorial Answer 3
Verified

Option D

Every table must have one column.
Additional Explanation
This option is incorrect for the stated requirement.
Sarkari Resultess
Editorial Answer 4