If the MAXRETAIL Column of the PROMOTION Table Has Been

question 82

Multiple Choice

If the MAXRETAIL column of the PROMOTION table has been set as unused,which of the following commands is valid?​

• A) ​ALTER TABLE promotion RESET maxretail USED;
• B) ​ALTER TABLE promotion DROP COLUMN maxretail;
• C) ​ALTER TABLE promotion DROP UNUSED COLUMNS;
• D) ​both b and c

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Definitions:

Basis for Monopoly

The underlying conditions that enable a firm or entity to become or remain the sole supplier of a good or service, such as control over resources, government regulation, or technology.

Pure Monopoly

An economic condition where one firm controls the market for a product, effectively eliminating competition.

Close Substitutes

Goods or services that can easily replace each other in consumption, offering consumers nearly identical satisfaction.

Natural Monopoly

A market situation where a single firm can supply a good or service to an entire market at a lower cost than could multiple firms.