Data flow diagrams can be used in which of the following steps of the systems development life cycle: (i) requirements analysis, (ii) design, (iii) implementation.
A)I and II only
B)I and III only
C)II and III only
D)I, II and III

Question

Quizplus · Accepted Answer

Data flow diagrams (DFDs) are useful in all three steps of the systems development life cycle. In the requirements analysis phase, DFDs can be used to describe the current system and identify the requirements for the new system. During the design phase, DFDs can be used to model the new system, identify its components, and specify how they interact. In the implementation phase, DFDs can be used to plan and execute the coding and testing of the new system. Therefore, the correct answer is D, which includes all three steps of the systems development life cycle.

Data Flow Diagrams Can Be Used in Which of the Following