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当前基于C/S(Client/Server,客户机/服务器)模式的数据库盛行,但由于各种条件的限制,许多应用系统仍然不能完全实现C/S的模式。一方面,由于C/S模式是90年代发展起来的,许多行业或部门(如银行、保险业等)在80年代就开始使用计算机,至今还没有采用C/S模式,大量的应用是基于终端/主机模式的;另一方面,当前国内计算机的应用水平还不高,使用终端/主机模式可以减少系统管理员对应用端的维护。所以如果系统内需要远程访问而又不能连接某—台主机时,使用终端直接连接Modem,在
Currently, databases based on C / S (Client / Server) mode prevail, but due to various limitations, many applications still can not fully implement the C / S mode. On the one hand, since the C / S model was developed in the 1990s, many industries or sectors (such as banks and insurance companies) started to use computers in the 1980s and so far no C / S model has been adopted. A large number of applications are based on terminals / Host mode; the other hand, the current level of domestic computer application is not high, the use of terminal / host mode can reduce the system administrator on the application-side maintenance. So if the system needs remote access and can not connect to a - Taiwan host, the use of the terminal directly connected Modem, in