Give out three-tier architecture model and make overall system function design.
提出了三层体系模型，进行了总体功能设计。
At last, the author propose a three-tier model of knowledge warehouse architecture.
最后，提出了一个三层的知识仓库体系结构模型。
At last, the author propose a three-tier model of knowledge warehouse architecture.
最后，提出了一个三层的知识仓库体系结构模型。
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