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

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.