Activity performed, by means of analysis and tests, to determine, at each life cycle phase, that the requirements of the current phase are consistent with the results of the previous phase and that the results of the current phase satisfy the requirements defined tor it. Activity performed, by means of analysis and tests, to determine, at each life cycle phase, that the requirements of the current phase are consistent with the results of the previous phase and that the results of the current phase satisfy the requirements defined tor it
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