Which of the Following Is True of an Entity-Relationship (E-R)diagram

question 10

Multiple Choice

Which of the following is true of an entity-relationship (E-R) diagram?

• A)Each entity is shown in separate rectangles.
• B)Many-to-many relationships are generally denoted by N:N.
• C)A crow's foot represents a 1:N relationship between two entities.
• D)Crow's foot is a shorthand representation for a single relationship between entities.

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Definitions:

Vertical Change

A movement along the y-axis in a graph, which in economic terms can represent changes in price or quantity depending on the context.

Independent Variable

is a variable in an experiment or study that is manipulated by the researcher to observe its effect on the dependent variable, determining cause-and-effect relationships.

Dependent Variable

In statistics and research, it refers to the variable being tested and measured, assumed to depend on one or more independent variables.

Independent Variable

A variable in an experiment or study that is manipulated or changed to observe its effects on the dependent variable.