Which Statement Below Is False Regarding the Basic Requirements of the Relational

question 35

Multiple Choice

Which statement below is false regarding the basic requirements of the relational data model?

• A) Every column in a row must be single-valued.
• B) All non-key attributes in a table should describe a characteristic about the object identified by the primary key.
• C) Foreign keys, if not null, must have values that correspond to the value of a primary key in another table.
• D) Primary keys can be null.

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Definitions:

Level of Significance

Represents the critical value that delineates the boundary for rejecting the null hypothesis in hypothesis testing.

Power of Test

The probability that a statistical test will correctly reject a false null hypothesis, a measure of a test’s ability to detect an effect when there is one.

Specified Value

A particular or defined value, often set as a criterion or standard.

Null Hypothesis

A hypothesis in statistics that assumes there is no significant difference or effect and serves as the default assumption in a hypothesis test.