Part IV: ER$+$EER Diagram

$(5$ Points$)$

Q$9.$ Draw ER diagram for the following scenario of Gym.

A User plays at the gym should enter his$/$her information, including: name, phone$($unique$)$ and medical issues $($which could have many values$).$

Classes given by coaches at the gym have their title $($unique$),$ date, and time.

The system stores coach SSN$,$ name, and Date of birth

Dietitian puts personal plans for users. The system stores their SSN$,$ name, and experience.

A user should register in at least one class, and a coach may give multiple classes.

A class has exactly one coach but may have many users.

A user works with only one dietitian, whereas a dietitian may put plans for multiple users and recording each plan's starting date, and main goal.