For an SQL Implementation to Truly Support the Union Operation,it

question 43

Multiple Choice

For an SQL implementation to truly support the union operation,it must remove ____ rows automatically.​

• A)dependent
• B)​no
• C)independent
• D)​duplicate

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Definitions:

Standard Deviations

A gauge of the degree of distribution or deviation of values in a collection, reflecting the distance of the values from their central value.

Descriptive Statistics

Statistical methods that summarize and describe the features of a dataset through measures such as mean, median, and standard deviation.

Variables

Characteristics or attributes that can assume different values among subjects in a study.

Crime Rates

The number of crimes committed per unit of population within a given time period, usually expressed per 100,000 people.