Which of the following statements about foreign keys is not true?
A. Foreign key must match values of the linked primary key.
B. A foreign key can be a combination of attributes.
C. Foreign keys support a defined association.
D. A foreign key cannot be NULL.
Answer: D
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Answer the following statement true (T) or false (F)
A feature of the economic model of corporate social responsibility (CSR) is that it:
A. holds pursuit of profit as the sole duty of business. B. prevents shareholders from being at the center of a corporation. C. expects business to have a strict obligation to contribute to social causes. D. states that profit is independent of optimal allocation of resources.
_____ is a form of a microblog and allows you to send and receive text messages of roughly 140 characters or fewer.
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The Ford Motor Company has entered into an alliance with Yves Saint Laurent, a maker of clothing and one of the most successful fashion houses in the world. Yves Saint Laurent is headquartered in France. Ford will use Yves Saint Laurent designs and color traditions in its production of luxury models of the company's Expedition SUV and Lincoln vehicles. The Yves Saint Laurent elements will appear in the interior and body paint color. This alliance would most likely be classified as
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