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A data flow diagram (DFD) is a graphical representation of the "flow" of data through an information system, modelling its process aspects. A DFD is often used as a preliminary step to create an overview of the system, which can later be elaborated. DFDs can also be used for the visualization of data processing (structured design).
A DFD shows what kind of information will be input to and output from the system, where the data will come from and go to, and where the data will be stored. It does not show information about the timing of process or information about whether processes will operate in sequence or in parallel (which is shown on a flowchart).
Larry Constantine, the original developer of structured design, based on Martin and Estrin's "Data Flow Graph" model of computation.
Starting in the 1970s, data flow diagrams (DFD) became a popular way to visualize the major steps and data involved in software system processes. DFDs were usually used to show data flow in a computer system, although they could in theory be applied to business process modeling. DFD were useful to document the major data flows or to explore a new high-level design in terms of data flow.
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data flow diagram in fertilizer shop management system in pdf
Hostel Management System is a system for managing the various activities in the hostel. It is used for managing the hostel information. It manages the student information, room information, room allocation details, fee details, mess bill details and employee details of the hostel. It is also used to generate reports of student details, fee details and mess bill details of the student. It keeps track of the number of student in the room and availability of the room. It helps organization from the manual work from which it is very difficult to find the record of the students and the mess bills of the students.
Scope:
The Hostel Management System is used to keep track of hostel information in the organization. It is used to improve clerical services for all the students of the hostel. The system will help to the users to check the mess bills of every student and the student s hostel dues. The main feature of this project is easy to allocate hostel rooms for the student and also easy generation of mess bill with all accuracy.
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Hi am sumit i would like to get details on data flow diagram in fertilizer shop management system in pdf .
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Hello sir plzz snd data flow diagram of seeds management syste
