SYSTEMS DEVELOPMENT ANALYSIS
WHY IS SYSTEM ANALYSIS IMPORTANT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
important
|
|
|
correct
|
|
|
not important
|
|
|
incorrect
|
Detailed explanation-1: -Diagramming mistakes: Black holes, grey holes, and miracles A second class of DFD mistakes arise when the outputs from one processing step do not match its inputs. It is not hard to list situations in which this might occur: A processing step may have input flows but no output flows.
Detailed explanation-2: -The objective of a DFD is to show the scope and boundaries of a system as a whole. It may be used as a communication tool between a system analyst and any person who plays a part in the order that acts as a starting point for redesigning a system. The DFD is also called as a data flow graph or bubble chart.
Detailed explanation-3: -In Software engineering DFD(data flow diagram) can be drawn to represent the system of different levels of abstraction. Higher-level DFDs are partitioned into low levels-hacking more information and functional elements. Levels in DFD are numbered 0, 1, 2 or beyond.