A Foreign Key Is Indicated in SQL in Part with the Use

question 12

Multiple Choice

A foreign key is indicated in SQL in part with the use of the following keywords in a CREATE statement:

• A) UNIQUE
• B) NOT NULL
• C) PRIMARY KEY
• D) REFERENCES

---

Definitions:

Consumer Surplus

The distinction between the total sum consumers are ready and financially equipped to pay for a product or service, and the sum they actually end up paying.

Consumer Surplus

The variegation between the preferred payment amount by consumers for a good or service and their final payment amount.

Producer Surplus

The discrepancy between the price at which producers are prepared to sell a product and the actual price they obtain.

Consumer Surplus

A mismatch between the price consumers feel prepared to pay for a good or service, and the actual outlay.