Using an Index for Attributes Referenced in ORDER BY and GROUP

question 48

True/False

Using an index for attributes referenced in ORDER BY and GROUP BY clauses has no significant impact upon database performance.

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Definitions:

Price Discrimination

The approach of pricing the same item differently for various consumer segments, typically depending on how much they are prepared to spend.

Consumer Surplus

An economic measure of consumer benefit, calculated by analyzing the difference between what consumers are prepared to pay for a good or service relative to the market price.

Deadweight Loss

An economic inefficiency that occurs when a market is not in competitive equilibrium, leading to a loss of economic value.

Price Discriminate

A pricing strategy where the same product or service is sold at different prices to different customers, based on their willingness to pay.