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Why is maintenance of a software important?
The alteration of a software product, after delivery, to correct faults, to improve performance or other attributes, or to adapt the product to a changed environment.
Maintenance is a significant part of the software life-cycle. It is costly in manpower and resources, and one of the aims of software engineering is to decrease its cost.
The most significant problem during maintenance is the before correcting or modifying a program, the programmer must first understand it.
What is recovery testing and Security testing Recovery testing is system tests that bind the software to fail in a variety of ways and justify that recovery is correctly perf
Structure chart: A structure chart is a top-down modular design tool, constructed of squares representing the dissimilar modules in the system, and lines that connect them. The l
a) There are four steps or activities in needs engineering: elicitation, specification, validation, and negotiation. Briefly explain the task of every of the four steps. Why needs
Distinguish between verification and validation. Verification is the set of activities that ensure that software properly implements a specific function. Validation is a differ
Test Configuration Managers handles test environments, scripts, software and test data. Depending on the project, single person may wear more than single hat. For example, Test Eng
What is recovery testing? Recovery testing is a system test that forces the software to fail in a various of ways and verifies that recovery is properly done.
What is Transform mapping? The transform mapping is a set of design steps applied on the DFD in order to map the transformed flow characteristics into exact architectural style
box diagram with example
What is meant by software change? Software change is termed as the change in nature of software as the requirements of software changes.
Structured Analysis Model Structured analysis is the most broadly used of requirements modeling techniques relies on flow modeling and data modeling to established t
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