In a Database Such as That Pictured in the Accompanying

question 33

Multiple Choice

In a database such as that pictured in the accompanying figure, users can set up a relationship between tables at any time, but the tables must have which of the following in common?

• A) a record
• B) a row
• C) a column
• D) a key

---

Definitions:

Pure Competition

A market structure characterized by a large number of small firms, identical products, and free entry and exit, leading to price taking behavior.

Monopolistic Competition

A market structure where many firms sell products that are similar but not identical, leading to competition based on quality, price, and marketing.

Economic Profits

The surplus or financial gains achieved by a firm or an individual after accounting for all explicit and implicit costs.

ATC Curve

The Average Total Cost curve in economics represents the total cost per unit of output, including both fixed and variable costs.