Which of the following is true about a relation?
A) The order of the columns in a relation must go from largest to smallest.
B) All entries in any column must be of the same kind.
C) A relation may have duplicate column names.
D) A relation may have duplicate rows.
E) A relation may have multiple names.
B
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When are price controls usually be used?
a. Price controls are usually used when there are profits in the market. b. Price controls are usually used when the market is inefficient. c. Price controls are usually used when there is monopoly power in the market. d. Price controls are usually used when policymakers believe that the market price of a good or service is unfair to buyers or sellers.
A commodity raw material that comes from Africa, is refined in Asia, is shipped to South America for finishing, and finally is transported to the Middle East and then sold around the world mimics products marketed by:
A) Exxon. B) McDonald's. C) Caterpillar. D) IKEA. E) Sears.