For the business rules given below, create and draw a fully$-$labeled entity$-$relationship diagram $($ERD$).$ When creating a diagram, please make sure to include all the required entities and relationships $($use correct relationships strength $-$ weak or strong$)$ along with proper primary and foreign keys, indicate cardinalities and optionality for each relationship $($on both sides$),$ and use proper names for tables and relationships.

Please feel free to reference a Sample Database provided above.

Business Rules:

In a medical clinic, a patient can make many appointments with one or more doctors in the clinic, and a doctor can accept appointments with many patients. However, each appointment is made with only one doctor, and each appointment references a single patient.

The appointment yields a diagnosis and, when appropriate, treatment.