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What does Level0 DFD means?
Level0 DFD is called as 'fundamental system model' or 'context model'. In the context model the total software system is represented by a single bubble with input and output indicated by incoming and outgoing arrows.
What is data modeling? Data modeling is the basic step in the analysis modeling. In data modeling the data objects are explained independently of processing. The data model sho
Q. Differentiate between failures and faults? Ans. Failure: -Failure is the disappearance of external results of program operation from requirements. Consequently failure is
Q. Why we need restructuring techniques? The restructuring helps in maintaining a program in the following ways: (a) Programs have higher excellence better documentation l
Q. Management Issues in software development? Management Issues:-Project managers typically write the risk management plan and most people don't wish to air their weaknesses in
System evolution of life cycle process The lifetime of verge systems is too long. They must evolve to meet change requests. The evolution may be expensive. Existing sy
Testing conducted to consider a system or component in its operational environment. Contrast with development, testing,; testing, acceptance;
What are the advantages and disadvantages of size measure? Advantages: Artifact of software development which is simply counted. Many existing methods use LOC as a key input. A
Test Case A test case is a unit level document describing the inputs, steps of implementation and the expected result of each test condition for each requirement from the BRD.
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Depth of conditional nesting This is a measure of the depth of nesting of if-statements in a program. Deeply nested if statements are hard to understand and are potentially er
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