In the following diagram, which of the answers below is true?
A) Each patient has one or more patient histories.
B) Each patient has one and only one visit.
C) Each patient history belongs to zero and one patient.
D) Each patient history belongs to many patients.

Question

In the following diagram, which of the answers below is true? 
A) Each patient has one or more patient histories. 
B) Each patient has one and only one visit. 
C) Each patient history belongs to zero and one patient. 
D) Each patient history belongs to many patients.

Quizplus · Accepted Answer

From the diagram, we can see that the "Patient History" entity is connected to the "Patient" entity with a many-to-one relationship, indicating that each patient can have one or more patient histories. The "Visit" entity is connected to the "Patient" entity with a one-to-one relationship, indicating that each patient has one and only one visit. Therefore, option A is the correct choice. Option B is incorrect because each patient can have multiple patient histories. Option C is incorrect because a patient history belongs to exactly one patient. Option D is incorrect because each patient history belongs to only one patient.

In the Following Diagram, Which of the Answers Below Is