MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A data flow diagram (DFD) is a graphical or visual representation using a standardized set of symbols and notations to describe a business’s operations through data movement. They are often elements of a formal methodology such as Structured Systems Analysis and Design Method (SSADM).

Detailed explanation-2: -A data flow diagram (DFD) maps out the flow of information for any process or system. It uses defined symbols like rectangles, circles and arrows, plus short text labels, to show data inputs, outputs, storage points and the routes between each destination.

Detailed explanation-3: -There are two distinct types of data flow diagrams: the logical DFD and the physical DFD.

Detailed explanation-4: -DFDs were usually used to show data flow in a computer system, although they could in theory be applied to business process modeling. DFDs were useful to document the major data flows or to explore a new high-level design in terms of data flow.

Detailed explanation-5: -A data flow diagram (DFD) is type of flowchart, a graphical representation of the flow of data through an information system. It is also known as a data flow diagram, function diagram, or process diagram.