The Minimum Cardinality from the Sales Event to the Services

question 42

Multiple Choice

The minimum cardinality from the Sales event to the Services entity is most likely 1 because

• A)every sale includes performing a service.
• B)a service is only recorded once a sale has occurred.
• C)only 1 service is provided for each sale.
• D)the minimum cardinality is always set to be 1.

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Definitions:

Dependent Variable

The variable in an experiment or study that is affected by changes in the independent variable, representing the output or outcome.

Dummy Variables

Variables created to represent categorical data with two or more categories by assigning binary values (0 or 1), allowing them to be used in regression models.

Qualitative Variables

Variables that express qualitative attributes, and are usually described by non-numeric categories or groups.

Regression Model

A statistical approach for estimating the relationships among variables, often used for prediction and forecasting.