数据库备份可以通过使用系统过程在线执行，也可以使用操作系统复制命令离线执行。恢复操作是通过连接ur l属性提供的。
Database backups can be performed online using system procedures, or offline using operating system copy commands.
它实现了数据的在线、高效备份，可靠、快速恢复，同时该系统还具有管理方便、扩展性好等特点。
It has fully thought through the expansibility, security and reliability and has accomplished automatic concentrated management, remote backup and disaster...
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