并且提出数据中心多级数据交换模型,它是本文研究的重点。
Besides, This paper puts an emphasis on the multi-data transfer model of land resources data center.
分析了数据交换模型的设计目标,构造出数据交换的框架模型。
And then analyzed the design goals of the data exchange model, constructed its framework.
介绍了基于XML的数据交换模型和基于VPN的数据安全传输方式;
The author still introduce data exchange model based on XML and data safe exchange style on VPN.
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