DFD for hospital management systems is frequently used as an essential step to create an overview of the hospital without going into details that can later be elaborated. It typically consists of overall application dataflow and Hospital process processes. The context-level data flow diagram depicts the entire system. It displays all user modules that operate the system. According to the DFD for the hospital management system, there is only one user of hospital admin staff to run the system. A data flow diagram is a graphical representation of how data in a system is processed in terms of input and output.