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DFD
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Blank diagram
Context diagram (food ordering)
Level 1 DFD (food ordering)
Library Management System – Context
Library Management System – Level 1
Hospital Management System – Context
Hospital Management System – Level 1
ATM System – Context
ATM System – Level 1
Online Shopping System – Context
Online Shopping System – Level 1
Student Management System – Context
Student Management System – Level 1
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Yourdon–DeMarco
Gane–Sarson
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