A Primary Key Is a Field (Or Group of Fields)

question 338

True/False

A primary key is a field (or group of fields) that uniquely identifies a given record in a table.

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Definitions:

Primary Datum

A specific reference point, line, or surface used as a basis for dimensional control in design, manufacturing, and inspection processes.

Flat Surfaces

Flat surfaces refer to geometric planes that are smooth and even without curvatures or irregularities.

Datum Targets

Specific areas designated on parts that are used as reference points for measurement, mounting, or other operations, essential for accurate manufacturing.

Datum-Target Symbol

A symbol used in geometric dimensioning and tolerancing to designate specific points, lines, or areas on a part to establish a datum.