IGNOU MCS-014 Systems Analysis and Design, Latest Solved Assignment (July 2023 - January 2024 )
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Q2) Draw the DFDs upto 3rd level for Student Admission System.
Ans. Data Flow Diagrams
A Data Flow Diagram (DFD) is a traditional visual representation of the information
flows within a system. A neat and clear DFD can depict the right amount of the
system requirement graphically. It can be manual, automated, or a combination of
both.
It shows how data enters and leaves the system, what changes the information, and
where data is stored.
Levels of DFD
- Level – 0 Data Flow Diagrams – These diagrams describe general high-level processes (the first level of numbering is used), external entities, data flows, and data stores. An example of the first level of numbering for a process is 1.
- Level – 1 Data Flow Diagrams – Level – 1 DFD decomposes each parent process of the Level – 0 DFD into more details; into child processes. It also contains data stores, external entities, and data flows. An example of numbering for a process 1.
- Level – 2 Data Flow Diagrams – Level – 2 DFD further decomposes the child process depicted in Level – 1 DFD. An
example of numbering for a process is 1.1.1.



Assignment Submission Last Date
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30th April (if Enrolled in the June Exams)
31st October (if Enrolled in the December Exams)