How to Draw Data Flow Diagram for Hospital Management System

What are the main functions and key features of a Hospital Management System?

1. What operational works are done in a Hospital Management System?

2. What are the nonfunctional requirements of a Hospital Management System?

Answers:

A data flow diagram (DFD) for a Hospital Management System (HMS) takes into account its main operations and key features.

Explanation:

The data flow diagram (DFD) for a Hospital Management System (HMS) would consider the various operational works and key features of the system. The main operations of the HMS include consultation by doctors, diagnosis, providing treatment, admitting patients, and immunization. Key features consist of user account management, appointment management, invoice management, medical report management, and more.

A typical DFD of a Hospital Management System starts with external entities like 'Patients' and 'Doctors'. From 'Patients', a data flow 'Request for Service' is directed to the process 'Patient Services'. This process is linked to a data store 'Patient Records' for data storage and retrieval. Similar flows are created for other processes such as 'Multi-User Account System', 'Invoice Management', 'Medical Report Management', etc. The interaction between processes is also depicted in the diagram.

In essence, a DFD for a Hospital Management System serves as a graphical representation to illustrate how the system manages data, processes input to output, and stores data effectively.