In a Database, a Column or Group of Columns That

question 1

Multiple Choice

In a database, a column or group of columns that identifies a unique row in a table is known as a ________.

• A) field
• B) record
• C) file
• D) key

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Definitions:

Marginal Costs

refers to the cost associated with producing each additional unit of a product or service.

Average Total Cost

The total cost of production divided by the quantity produced, representing the per-unit cost of production, including both fixed and variable costs.

Diminishing Marginal Returns

A principle stating that as more of a variable input is added to a fixed input, beyond some point, the additional output produced from the additional input will eventually start to decrease.

Marginal Cost Curve

A graphical representation showing how the cost of producing one additional unit of a good changes as production volume changes.