Which of the Following SQL Statements Is a Correctly Stated

question 92

Multiple Choice

Which of the following SQL statements is a correctly stated correlated subquery?

• A)SELECT C1.CustName,C1.SalesRepNo
• FROM CUSTOMER C1
• WHERE C1.SalesRepNo IN
• (SELECT S1.SaleRepNo
• FROM SALESREP S1
• WHERE S1.RepName = 'Smith');
• B)SELECT C1.CustName,C1.SalesRepNo
• FROM CUSTOMER C1
• WHERE C1.SalesRepNo IN
• (SELECT S1.SaleRepNo
• FROM SALESREP S1
• WHERE S1.RepName = 'Smith')
• AND C1.SalesRepNo=S1.SalesRepNo);
• C)SELECT C1.CustName,C1.SalesRepNo
• FROM CUSTOMER C1
• WHERE C1.SalesRepNo IN
• (SELECT S1.SaleRepNo
• FROM SALESREP S1
• WHERE S1.RepName = 'Smith')
• AND C1.SalesRepNo<>S1.SalesRepNo);
• D)SELECT C1.CustName,C1.SalesRepNo
• FROM CUSTOMER C1
• WHERE C1.SalesRepNo IN
• (SELECT C2.SaleRepNo
• FROM CUSTOMER C2
• WHERE C1.SalesRepNo=C2.SalesRepNo);
• AND C1.OrderNo<>C2.OrderNo);
• E)None of the above is a correctly stated correlated subquery.

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Definitions:

Conditioned

Describes a response that has been learned through the process of conditioning, where a neutral stimulus becomes associated with a meaningful stimulus, eliciting a learned response.

Learning

The process of acquiring new understanding, knowledge, behaviors, skills, values, attitudes, and preferences.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, eventually comes to trigger a conditioned response.

Unconditioned Stimulus

A stimulus that naturally triggers a response without any prior learning or association.