What Is the Role of a Foreign Key

question 173

Multiple Choice

What is the role of a foreign key?

• A)It is a primary key of one table that appears as an attribute in another table and acts to provide a logical relationship between the two tables.
• B)It is a unique way to identify each record.
• C)Is a field that uniquely identifies a give record in a table.
• D)All of these are correct.

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Definitions:

Null Hypothesis

A hypothesis that assumes no statistical significance or effect exists in a set of observations.

Level Of Significance

The threshold below which a statistical result is considered significant, indicating that an observed effect is unlikely to be due to chance alone.

Quantitative Data

Data that can be quantified and verified, and is amenable to statistical manipulation, typically involving numerical values.

Parametric Statistical Test

Statistical tests based on assumptions about the population parameters and the distribution of the sample data.