Which of the following data flow diagram (DFD) guidelines is correct?
A) include within the system context any entity that performs one or more information processing activities
B) read computer data stores from the process bubble that requires the data
C) include within the system context any entity in the system narrative
D) data flows should never go from higher- to lower-numbered bubbles

Question

Quizplus · Accepted Answer

Including all entities that perform information processing activities within the system context is important for accurately representing the scope of the system. Option B is incorrect because data stores should be represented outside of process bubbles, not within them. Option C can lead to including entities that are not relevant to the system. Option D is not a valid guideline, as data flows can go from higher- to lower-numbered bubbles if it accurately represents the flow of information within the system.

Which of the Following Data Flow Diagram (DFD) Guidelines Is