CVS 客户端使用手册,CVS（Version Control System.）即版本控制系统。用来记录源文件的历史信息。甚至二进制文件，媒体文件等-CVS client user manual CVS (Version Control System.) that the version control system. Used to record the source of historical information. Even binary files, media files, etc.

根据实时数据库中历史数据的特点，设计了一种应用于过程控制系统实时数据库中的历史数据压缩算法，实现了对历史数据的无损快速压缩-historical data in the database in real time to the characteristics, design a process control system used in real-time database of historical data compression algorithm, realized the histo