COMPUTER SCIENCE AND ENGINEERING
SOFTWARE ENGINEERING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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splitting it into different levels
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make its structure uniform
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expanding a process into one with more sub-processes giving more detail
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summarizing a DFD to specify only the essentials
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Detailed explanation-1: -Top-down decomposition, also called leveling, is a technique used to show more detail in lower-level DFDs. Leveling is done by drawing a series of increasingly detailed diagrams until the desired degree of detail is reached.
Detailed explanation-2: -Level 1 DFDs are still a general overview, but they go into more detail than a context diagram. In level 1 DFD, the single process node from the context diagram is broken down into sub-processes. As these processes are added, the diagram will need additional data flows and data stores to link them together.
Detailed explanation-3: -Data flow diagram (DFD): Level 2 This level two data flow diagram (DFD) template can map out information flow, visualize an entire system, and be shared with your stakeholders.
Detailed explanation-4: -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.