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Computing (FOLDOC) dictionary
software life-cycle
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programming The phases a software product goes through
between when it is conceived and when it is no longer
available for use. The software life-cycle typically includes
the following: requirements analysis, design,
construction, testing (validation), installation, operation,
maintenance, and retirement.
The development process tends to run iteratively through these
phases rather than linearly; several models (spiral, waterfall
etc.) have been proposed to describe this process.