Question

Dfd for grade card generation system upto 3 level

Answer 1

the DFD is attached below 

Answer 2

Explanation:

DFD for Student Grading System Level 0 :

The Student Grading System stage zero (context diagram) represents the summary view of the task in a unmarried manner with outside parties. This stage introduces to you the primary characteristic and fundamental idea of the task.

DFD for Student Grading System Level 1 :

Next to the context diagram is the extent 1 information waft diagram. It carries the broadened idea of DFD Level zero. It’ll be performed with the aid of using figuring out the covered strategies to finish the fundamental concept from the context diagram.

DFD for Student Grading System Level 2 :

After offering the scholar grading control device DFD stages zero and 1, subsequent to this is stage 2. It is taken into consideration as the best DFD abstraction as it completes the information wanted for Student Grading System.