A software system is to be developed to manage the records of patients who enter a clinic for treatment. The records include records of all regular patient monitoring $($temperature$,$ blood pressure$),$ treatments given, patient reactions and so on$.$ After treatment, the records of their stay are sent to the patient$$s doctor who maintains their complete medical record.

Identify the principal viewpoints which might be taken into account in the specification of this system and organize these using a viewpoint hierarchy diagram.

Model the object classes that might be used in this system.