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.
负责数据库管理，对数据进行维护和定期备份；
Responsible for database management, data maintenance and the regular data backup;
负责数据库管理，对数据进行维护和定期备份；
Responsible for database management, data maintenance and the regular data backup;
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