A Data Item or Combination of Data Items That Uniquely

question 103

Multiple Choice

A data item or combination of data items that uniquely identify a particular record in a file is called a(n)

• A) key.
• B) occurrence.
• C) attribute.
• D) variable-length field.

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Definitions:

Physicists

Scientists who specialize in the study of matter, energy, and the interactions between them.

Slope

In mathematics, it's the measure of the steepness or the angle of a line, defined as the ratio of the vertical change to the horizontal change.

Price

The monetary value attached to the purchase of a good or service.

Quantity

The quantity of a tangible or intangible product or service.