The Management System Of Active Real-Time Database

With the development of the research on real-time database system, the application of real-time database system press for affiliating active performance into real-time database system. The real-time database system is one part of the semaphore real-time monitoring system of boiler water level .Its main function includes analyzing those collected semaphore, the result analyzed from those semaphore were shown on the monitor, or given sound a warning. The real-time database system's architecture has three layers: the data-manage layer, the data-interface layer, the database-application layer. In the data-manage layer, the trigger of SQL Server 2000 is used to actively analyze the semaphore and actively check the validity of semaphore; In the data-interface layer, Mailslot and ADO are used to actively intercommunicate between the data-manage layer and the database-application layer; In the database-application layer, different analyzing result will be actively processed by different managing method, and the user may change these manage methods by their own intention.