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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