COMPUTER SOFTWARE
PROGRAMMING LANGUAGES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The movement of data between processes.
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The movement of data into and information out of a system.
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The order in which processes occur in a system.
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The nature of data structures used by processes within the system.
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Detailed explanation-1: -A context diagram, sometimes called a level 0 data-flow diagram, is drawn in order to define and clarify the boundaries of the software system. It identifies the flows of information between the system and external entities. The entire software system is shown as a single process.
Detailed explanation-2: -Context diagrams show the interactions between a system and other actors (external factors) with which the system is designed to interface. System context diagrams can be helpful in understanding the context which the system will be part of.
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: -Logical data flow diagram (DFD): Graphical representation of a system showing the system’s processes (as bubbles), data stores, and the flows of data into and out of the processes and data stores.
Detailed explanation-5: -A data flow diagram (DFD) is a way to show the flow of data through a process or system and the context diagram is a type of DFD. It’s also known as DFD Level 0 because it gives you a quick overview of the system or process being modeled.