The data flow diagram for a hospital management system shows how information flows. It illustrates the movement between patients, doctors, receptionists, and the pharmacy. Patients can request appointments, register details, and receive treatment updates. Doctors diagnose and manage staff. The admin handles billing and ensures medication is available. Receptionists handle appointment confirmations and billing processing. The pharmacy manages medication requests and payments. This DFD helps departments communicate and work together better. This boosts patient care and makes operations more efficient. It shows how a centralized management system can simplify hospital operations. This helps improve service delivery.