Composite Primary Keys Are Particularly Useful as Identifiers of Composite

question 10

Short Answer

Composite primary keys are particularly useful as identifiers of composite entities, where each primary key combination is allowed _____ in the M:N relationship.

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Definitions:

Chi-square Test

An analytical procedure employed to find out if a considerable link is present between two categorical factors.

Goodness-of-fit Test

Statistical tests that measure how well observed sample data fits a distribution from a population with a specified distribution.

Categorical Variable

A type of variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or observation to a particular group or category.

Degrees of Freedom

The number of independent values or quantities which can vary in the analysis of statistical parameters.