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  1. Which subquery cannot be executed by itself as a separate statement?
    1. EXISTS
    2. Correlated
    3. NOT EXISTS
    4. Uncorrelated
    5. None of these
Correct Option: B

An uncorrelated subquery contains references to the values from the outer query. So, it is dependent on it. Therefore, a correlated subquery cannot be executed by itself as a separate statement.


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