Database Design Based on COM and Its Application in Power Monitoring System
Dan Tang · Dianli zidonghua shebei · 2002
According to the difficult condition in the transplant, expansion and upgrade of power monitoring system, a database design method based COM is proposed, in which the advantages of COM are used, such as computer language independency. COM modules of data driving, table management and data access are designed to implement the database access functions of system database connection, data accessing and refreshing. The modules are organized to different layers by functions and the system can be expanded and upgraded by reorganizing relevant modules. The power monitoring system developed with this method has obvious advantages in compatibility and expansibility, and the feasibility and practicability are proven by its application in ER2000 power monitoring system.