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Determine the level 0 and level 1 of DFD
External entities provide input data for processing. During processing, some intermediate data is generated. After final processing, final output data is produced. Data store is repository of data.
Structured approach of system design needs extensive modeling of the system. Hence instead of making a complete model exhibiting the functionality of system, DFD's are created in a layered manner. At first layer, DFD is made at block level and in lower layers, details are shown. Hence level "0" DFD makes a fundamental system (Figure).
DFD's can signify the system at any level of abstraction. DFD of '0' level views entire software element as a single bubble with indication of only output and input data. Hence, "0" level DFD is also termed as Context diagram.
Define Software Lifecycle. Software Lifecycle is the time period beginning with the idea for a Software product ending whenever the Software is unavailable for use. SLC = SL
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Encapsulation An object expresses the data and information it contains and supports a well described abstraction. Encapsulation leads to the separation of the interface and ex
Q. Important issues related to SRS? (a) System goals as well as requirements are different- Goal is a more general characteristics. For example Whole system must be designed in
online admision application
List the process maturity levels in SEIs CMM. Level 1: Initial - Few processes are explained and individual efforts are taken. Level 2:Repeatable - To track cost schedule an
EXPLAIN THE WORKING OF CRT?
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Q. Why is maintenance of a software important? Discuss some of the problems that are faced during maintenance of software. Ans: The modification of a software product subsequ
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