Password file-base authentication: authentication is based on the password and shadow files or interaction with Network Information System (NIS), on the machine where the database server is installed.
基于密码文件的身份验证：身份验证基于安装数据库服务器的机器上的密码和影子文件，或者与Net work Information System (NIS)的交互。
This project design and implementation the new security instant messaging based on the topic of the existing network communication technology, database technology and information security technology.
本课题在现有的网络通信技术、数据库技术和信息安全技术的基础上设计并实现了新型的安全即时通信系统。
Based on the introduction of network system integration technique, we discuss the structure features of multi database system and integrated network system.
在介绍网络系统集成方法的基础上，重点讨论了多数据库系统与网络集成系统各自的结构特点。
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