The ____ Operation Is Performed by the SUBTRACT Command in Relational

question 10

Multiple Choice

The ____ operation is performed by the SUBTRACT command in relational algebra.​

• A) ​union
• B) ​difference
• C) ​product
• D) ​intersection

---

Definitions:

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effect on the dependent variable.

Second-Order Model

A second-order model in statistics or mathematics represents relationships where the effect of variables is not just linear but can also include squared terms or interactions between variables.

Predictor Variable

Also known as the independent variable, it is used in statistical models to predict the outcome of a dependent variable.

Response Surface

A graphical representation of how a response variable relates to two or more explanatory variables in an experiment.