Contents of the CUSTOMERS Table​

question 27

Multiple Choice

Contents of the CUSTOMERS table​

-​Based on the contents of the CUSTOMERS table,which of the following SQL statements will display the customer# of all customers who were referred by the same individual that referred customer# 1003?

• A) ​SELECT customer# FROM customers WHERE referred = (SELECT referred FROM customers WHERE customer# = 1003);
• B) ​SELECT customer# FROM customers WHERE referred EXISTS (SELECT referred FROM customers WHERE customer# = 1003);
• C) ​SELECT customer# FROM customers WHERE NVL(referred,0)= (SELECT NVL(referred,0)FROM customers WHERE customer# = 1003);
• D) ​SELECT customer# FROM customers WHERE NVL(referred,0)= (SELECT referred FROM customers WHERE customer# = 1003);

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Definitions:

Economic Profit

The difference between the total revenue generated by a business and the total opportunity costs of all resources used.

Economic Profit

The difference between a firm's total revenue and its total costs, including both explicit and implicit costs, representing excess return over opportunity costs.

Rate of Return

The gain or loss on an investment over a specified time period, expressed as a percentage of the investment's initial cost.

Assets

Items of value owned by individuals, companies, or governments, including tangible items like real estate and equipment, and intangible items like patents and trademarks.