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First Level DFD (1st Level) of Timetable Management System shows how the system is divided into sub-systems (processes).

It may require more functionalities of Timetable Management to reach the necessary level of detail about the Timetable Management functioning. Second Level Data flow Diagram(2nd Level DFD) of Timetable Management System :ĭFD Level 2 then goes one step deeper into parts of Level 1 of Timetable Management.

Processing Class records and generate report of all Class.Processing Attendance records and generate report of all Attendance.Processing Timetable records and generate report of all Timetable.Main entities and output of First Level DFD (1st Level DFD): You will highlight the main functionalities of Timetable Management.

DFD Level 1 provides a more detailed breakout of pieces of the 1st level DFD. It also identifies internal data stores of Exam, Teacher, Subject, Student, Class that must be present in order for the Timetable Management system to do its job, and shows the flow of data between the various parts of Timetable, Class, Teacher, Exam, Subject of the system. First Level Data flow Diagram(1st Level DFD) of Timetable Management System :įirst Level DFD (1st Level) of Timetable Management System shows how the system is divided into sub-systems (processes), each of which deals with one or more of the data flows to or from an external agent, and which together provide all of the functionality of the Timetable Management System system as a whole.