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a system can operate together, and (iii) acceptance testing is
performed to determine whether the business user's requirements
have been satisfied. Further, during this phase, the programmers
correct errors in the coding process (known as debugging) as well
as in the design process.
Typically, the testing known as regression testing is
performed on prerecorded data. The use of prerecorded data is
important because the testers have known solutions and outcomes
against which the software can be tested, and new methods,
capabilities, and functions can be tested without risk to real
(production) data.
H. Phase 8: Implementation
In the implementation phase, the software is placed into
production (also known as going live), usually in a gradual
process. During this phase, the software application is used on
actual data by the end users (those who will be using the software
product). It is also during this phase that the end users are
trained in the use of the software.
I. Phase 9: Postimplementation
In the postimplementation phase, the software is maintained
through continuous debugging, updating, and enhancing to meet new
business needs.
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