In a Well-Structured Database,the Constraint That Ensures the Consistency of the Data

question 75

Multiple Choice

In a well-structured database,the constraint that ensures the consistency of the data is known as the

• A)entity integrity rule.
• B)referential integrity rule.
• C)unique primary key rule.
• D)foreign key rule.

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Definitions:

Variable

An element, feature, or factor that is liable to vary or change.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values from their mean.

Scores

Numerical data representing individual performance or achievement in a test, assessment, or experimental condition.

Average Deviation

The average difference between each data point in a set and the mean of that set.