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如何有效地利用电话线路传输计算机数据,避免不必要的占用电话线路时间,本文提出的远程访问的一种新方法则能很好地解决这个问题。即在客户端增加备份数据库,客户端程序中加一个网络登录功能,确保仅在数据传输之时占用电话线路,其他时间可以和网络断开。这样,客户端程序实际在数据操作期间是在用本地的数据,而当本地数据不能反映系统目前情况时,则启动下载模块,从服务器下载数据。当本地数据发生变更后,根据系统需要,在适当时机完成数据向服务器的提交。具体在程序中调用远程网络登录的方法如下。
How to effectively use the telephone line to transmit computer data and avoid unnecessary occupation of the telephone line time, a new method of remote access proposed in this paper can well solve this problem. In the client to increase the backup database, client program plus a network login feature to ensure that only occupy the phone line when the data is transmitted, the other time can be disconnected from the network. In this way, the client program actually uses the local data during the data operation, and when the local data does not reflect the current situation of the system, the download module is started and the data is downloaded from the server. When local data changes, according to the system needs, at the appropriate time to complete the submission of data to the server. The specific method of calling remote network login in the program is as follows.