Hospital Management ER diagram models core clinical and administrative entities: Administration Department, Doctor, Patient, Examination, and Prescription with primary and foreign key relationships. Data flows from the Administration Department to both Doctor and Patient entities, which then connect through Examination records and Prescription orders, establishing a normalized relational schema. This design enforces referential integrity and supports efficient querying of patient histories, doctor assignments, and medication records. Fork this diagram on Diagrams.so to customize table structures, add additional entities like Billing or Lab Results, or export as .drawio/.svg for your database documentation. The crow-foot notation clearly indicates one-to-many relationships, making it ideal for SQL implementation or ORM mapping in healthcare applications.