In this paper, we mainly discussed the two-tier Client/Server Database Management System in four phases: construction of database server, design of database application software on client, connection between application software and database server and maintenance of Database Management System.
本文主要从四个方面详细沦述了双层式客户／分务器结构数据库系统的应用和研究：数据库服务器的创建、客户端数据库应用程序的设计、应用程序与后端数据库的连接以及数据库的性能及维护。
参考来源 - 双层式客户/服务器结构数据库系统的应用与研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This approach overcomes the security problems of deploying two-tier systems over the WAN by replicating a native client to a remote user.
通过将一个原生客户端复制给一个远程用户，这种途径克服了通过WAN部署两层系统的安全性问题。
And two-tier systems perform poorly when a fat client must connect to a database over the WAN.
当胖客户机必须通过WAN连接到数据库时，两层系统的性能较差。
Then there was another form of two-tier architecture in which not only the UI but even the business logic resided on the client tier.
此后又出现了另外一种2级结构，在这种结构中，不只是用户接口（UI），连业务逻辑也被放到了客户端一级。
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