Each Doctor is described by Doc ID$,$ Phone, address, and specialization. Each doctor is allowed to work in only one department.

Each department is described by Dept no$,$ Name, No of doctors and is supervised by a doctor.

Each patient is described by Card number, name, address, and phone. Each patient is assigned to one or more department. It$$s required to keep track each admission date.

Each lab is described by LabNo, name. It$$s required to keep track any lab service that may be done to the patient