What Is the Main Purpose of Using Foreign Keys in a Relational

question 23

Short Answer

What is the main purpose of using foreign keys in a relational database design?
A. It provides useful financial data value in the table.
B. It is required in all tables.
C. It is used to link tables.
D. None of the above is correct.

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Definitions:

Rejection Region

The range of values for which the null hypothesis is not considered plausible and is rejected in hypothesis testing.

Radio Listening

The activity or measure of how many people listen to radio broadcasts within a given period or demographic.

Population Standard Deviation

A measure of the dispersion or spread of a set of data points in a population from its mean, indicating how widely the data points are scattered.

Significance Level

Another term for the level of significance, denoting the threshold below which the null hypothesis is rejected in a statistical test.