The ____ Constraint Prevents the User from Adding a NULL

question 83

Multiple Choice

The ____ constraint prevents the user from adding a NULL value in the specified column.​

• A) ​IS NULL
• B) ​NOT NULL
• C) ​NULL
• D) ​NULL KEY

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Definitions:

Significance Tests

Statistical tests used to determine if the results of a study are likely to be due to chance or if they are significant.

Significance Level

The probability of rejecting the null hypothesis when it is actually true, often denoted as alpha (α) and typically set at 0.05 or 5%.

Null Hypotheses

A statement in statistical inference that proposes no significant difference or no effect, serving as the default assumption to be tested.

Alternative Hypothesis

A statement in hypothesis testing that proposes a significant difference or effect, contrasting the null hypothesis.