The proposed system design is based on B / S of the three-tier architecture, using waterfall model that is the life cycle methodology developed.
系统采用了基于B/S的三层体系结构，利用瀑布模型即生命周期方法学进行软件开发。
More and more software organizations are moving away from the waterfall model of the life cycle to an iterative approach.
越来越多的软件组织开始从瀑布式模型向迭代式模型转变。
More and more software organizations are moving away from the waterfall model of the life cycle to an iterative approach.
越来越多的软件组织开始从瀑布式模型向迭代式模型转变。
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