Core Concepts of Accounting Information Systems 12th Edition by Carolyn Strand Norman, Mark Simkin

Exercise 34

The sandwich rule states that:
A) You should only create logic diagrams that have some ''meat'' in them
B) Every diagram should have a cover page and a summary page
C) A processing symbol should be between an input and an output symbol
D) In DFDs, there should always be data flow lines leading to and from files