This is a data flow diagram about food order. It assists us in comprehending the operation and limitations of a system. It is a graphical representation that is very simple to comprehend because it aids in the visualization of contents. Data Flow Diagrams are diagrams of system components that are thorough and well explained. A data flow diagram's most significant function is to keep the software orderly. Data flow diagrams are used by programmers to plan exactly how their new program will achieve its goal.