数据库服务器是现代大型制造业中不可缺少的一部分。随着制造业系统自动化程度的提高,数据库服务器与外界的交互越来越频繁,两层C/S结构已经不能适应系统发展的要求。本文对制造业EPA系统中原有OPC数据库系统进行改进,设计了三层C/S数据库系统,提高了系统的性能。
Abstract Database system is an important part in modern corporations. With the enhancement of automatization, the information exchanges of the database server with outside are more and more frequency. Tow-layer C/S structure does not adapt the development of automatization system. This paper improves the database system in EPA system and designs three-level C/S database system which improves the performance of the EPA system.
Keywords EPA OPC COM+
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