【摘要】 DDE是 Windows应用程序间数据通讯的一种方式。本文讨论了利用 Power Builder的 DDE功能设计基于数据库的实时监控系统的实现思路 ,以及实时数据被存储到SQL Server中用户前端分析、查询界面的设计方法。文中主要讨论了实时数据存储时 ,防止数据冲突及 SQL Server中用户通用查询的解决方法更多还原

【Abstract】 This paper introduces the concepts of implementing a real time supervising system based on database using the DDE function of PowerBuilder. DDE is a mode of data communication between Windows applications. The DDE client program can be easily realized with PowerBuilder. The real time data can be inserted into SQL Server so as to analyze them in a convenient way. This paper focuses on prevention of data conflicts in real time storing and a solution to general query in SQL Server by the user.更多还原