Which of the Following Is True of an E-R Diagram

question 30

Multiple Choice

Which of the following is true of an E-R diagram?

• A) Every entity has an identifier.
• B) Many-to-many relationships are generally denoted as N:N.
• C) A crow's-foot is required to represent a 1:1 relationship.
• D) Identifiers are shown in a section at the top of the entity.

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Definitions:

Interdependence

A mutual reliance between individuals or groups, where actions, decisions, or outcomes are influenced by others within a relationship or system.

Entitativity

The perception or quality of being a distinct and unified group, characterized by similarities, shared goals, or common fate among its members.

Cohesiveness

Refers to the strength of the bonds among members of a group, which often helps in enhancing group performance and satisfaction.

Emergent

Describes phenomena or patterns that arise or develop in complex systems, often unexpectedly and without a singular entity controlling them.