【摘要】 针对企业单位普遍存在异构型计算机网络的信息孤岛问题 ,分析ASN 1标准和数据库访问中的几个关键技术 ,提出了一种以ASN 1为基础、以单项数据广播的数据共享方案 .该方案由服务器端和客户端组成 ,服务器负责数据库的访问 ,并按照XML配置文件定时接收数据 ,且为数据库提供了一种高级访问接口 .服务器端与客户端之间采用ASN 1编码标准和用户数据报协议 (UDP)进行通信 ,其中应答方向的数据传输由UDP协议负责 ,请求方向的数据传输采用人工的方式 .这种新方法解决了异构型计算机网络中的数据访问问题 ,具有简便、安全、易操作和成本低的优点 ,具有广阔的应用前景更多还原

【Abstract】 Aiming at the common info-island problems existing in heterogeneous computer networks in some enterprises and after analyzing the ASN.1 standard and some key techniques when accessing database, a data share scheme of unidirectional data broadcasting was put forward based on the ASN.1. Moreover, the scheme consisted of the server end and the client end. The responsibility of the server end is to access the database, receive the data timing according to XML configuration files, and meanwhile providing one advanced interface to access database. The communication between the server and the client adopts ASN.1 coding standard and the UDP (user datagram protocal) transmission protocol. And the UDP protocol only responds to data transmission through the network from the reply end. The data originating from the request end is done manually. This novel method solves the data accessing problems in heterogeneous computer networks and has the advantages of simple, safe, easy-to-use and low-cost. So it would have a promising prospect for future applications.更多还原