Question

Which of the followings is design tool?[2 marks]

o Collaboration Diagram

o State Transition Diagram

o Flow Chart

o Data Flow Diagram

Answer 1

Answer:

Data Flow Diagram

Explanation:

Data flow diagram is representation of data which is processed in terms of input and output.It is a tool for designing the structure for a software.Rectangles,square and circles are used in representing the flow of information.

DFD consists two components

• Layers-It consist many layers,the top layer is called context diagram.
• Levels-The first level shows the main process of the system.