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:

Obstetrics

A branch of medicine and surgery concerned with childbirth and the care of women giving birth.

Biopsy

A medical test involving the removal of tissue from a living body to examine it for disease.

Acronym

A word formed from the initial letters of other words, used for brevity in writing and speaking.

Abbreviation

The shortened form of a word or phrase.