____ Means That an Entity Has a Minimum Cardinality of Zero.​

question 16

Multiple Choice

____ means that an entity has a minimum cardinality of zero.​

• A) ​The entity has a mandatory role in the relationship.
• B) ​The entity is not required in the relationship.
• C) ​The entity should not be in the relationship as an attribute.
• D) ​The entity must be listed with all zeroes in the data fields.

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Definitions:

Normally Distributed Random Variable

A variable that follows a Gaussian distribution, characterized by its bell-shaped curve, where the mean, median, and mode are all equal.

Mean

The arithmetic average of a set of values or distribution.

Variance

A measure of the spread of a set of numbers, indicating how much the values differ from the mean of the set.

Standard Normal Random Variable

A normal distribution with a mean of zero and a standard deviation of one, used in z-score calculations.