نمودار ERD بیمارستان با مشخصات زیر: 1-The hospital keeps some information about the patient such as : name, age, gender, birthdate and address. 2-The hospital assigns a unique identification number to each patient and also keeps a record for the patient including reception id, reception date and discharge date. 3-The hospital considers a doctor for each patient. Doctor’s information includes: name, id, specialty, work experience (in ages for example 20 ages) and seniority. Each doctor can ...