通常该恢复是当数据库运行在ARCHIVELOG模式下和联机备份时取得的。
Typically this recovery is achieved when database is running in ARCHIVELOG mode and backup online.
后面的这种情况并不是原始数据库的备份和恢复。
This latter scenario is not a complete backup and restore of the original database.
通常，只有在丢失重要数据时，才会认真考虑数据库的备份和恢复。
Backup and recovery of databases are often not considered seriously until vital data is lost.
对于灾难恢复，建议使用标准的数据库备份和存储过程。
For disaster recovery, standard database backup and restore procedures are advised.
如何备份和恢复默认数据库？
对于任何数据库管理系统来说，备份和恢复功能是确保数据可恢复性的关键。
Backup and restore capabilities are key to ensuring data recoverability for any database management system.
对于任何数据库管理系统来说，备份和恢复功能是确保数据可恢复性的关键。
Backup and restore capabilities are key to ensuring data recoverability for any database management system.
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