SYSTEMS DEVELOPMENT ANALYSIS
SYSTEMS DEVELOPMENT LIFE CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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structure design
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coding
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logical data structure
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program output
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Detailed explanation-1: -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-2: -A data-flow diagram is a way of representing a flow of data through a process or a system (usually an information system). The DFD also provides information about the outputs and inputs of each entity and the process itself. A data-flow diagram has no control flow-there are no decision rules and no loops.
Detailed explanation-3: -A data flow diagram shows the way information flows through a process or system. It includes data inputs and outputs, data stores, and the various subprocesses the data moves through. DFDs are built using standardized symbols and notation to describe various entities and their relationships.
Detailed explanation-4: -All data flow diagrams include four main elements: entity, process, data store and data flow.