Question

Which of the following statements related to the construction of data flow diagrams (DFDs) is false?

A) DFDs provide a visual representation of how data moves through a system.
B) In DFDs, processes are represented by rectangles, and data flows are depicted by arrows.
C) DFDs are typically created in a top-down manner, starting with a general overview and progressively detailing specific processes.
D) DFDs are primarily used for designing user interfaces and graphical user experiences in software development.

Answer 1

The false statement is that DFDs are primarily used for designing user interfaces. Processes in DFDs are represented by circles or ovals, not rectangles.

Step-by-step explanation:

The statement related to the construction of data flow diagrams (DFDs) that is false is: DFDs are primarily used for designing user interfaces and graphical user experiences in software development. Data flow diagrams are indeed a visual representation of how data moves through a system, as indicated by statement A.

Contrary to statement B, within DFDs, processes are not represented by rectangles; they are represented by circles or ovals, which are also referred to as 'bubbles'. Statement C correctly notes that DFDs are typically created in a top-down manner.

But D is false because DFDs are not primarily used for designing user interfaces and graphical user experiences. Instead, they focus on the flow of data within systems, typically in the analysis and design phases of the system development life cycle.