摘要
该文通过文件映射机制提出了集散控制系统的实时历史数据库查询历史数据的文件处理方案,利用文件映射机制在大型文件处理和频繁读写文件中的优势[4],提高了DCS实时历史数据库对历史数据文件的处理效率,缩短了查询历史数据的时间。
Based on the file mapping mechanism,the file processing scheme in real-time historical database of Distributed Con trol Systems（DCS） is presented to query the historical data.The advantage of the file mapping mechanism in the large document processing[4] and reading and writing files frequently make the scheme improve the efficiency of the real-time historical database in DCS to process historical data files and shorten the time of querying the historical data.
作者
孙哲
SUN Zhe（China Nuclear Control System Engineering Co.,Ltd.,Beijing 100176,China）
出处
《电脑知识与技术》
2013年第7期4363-4366,共4页
Computer Knowledge and Technology
关键词
文件映射
实时历史数据库
集散控制系统
file mapping
real-time historical database
distributed control systems（DCS）
