A(n)________ Is an Attribute (Or Combination of Attributes)whose Value Is

question 23

Multiple Choice

A(n) ________ is an attribute (or combination of attributes) whose value is unique across all occurrences of a relation.

• A)Composite key
• B)Primary key
• C)Identifier
• D)Index

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Definitions:

Consumer Surplus

The difference in consumer's payment expectation versus their actual expenditure on a good or service.

Demand Curve

A graph representing the relationship between the price of a good and the amount consumers are willing and able to purchase at various prices.

Producer Surplus

The difference between the actual price at which a producer sells a product and the minimum price they would be willing to accept, indicating producer gain.

Consumer Surplus

The difference between the total amount that consumers are willing and able to pay for a good or service and the total amount they actually do pay.