为你的数据库备份。

Perform a backup of your database.

youdao

开始升级之前，备份你的数据库非常重要。

It is extremely important to back up your database before beginning the upgrade.

youdao

从你的备份中恢复数据库可以在你遇到问题时使用。

Restoring your database from backup is then possible if something goes wrong.

youdao

从你的备份中恢复数据库可以在你遇到问题时使用。

Restoring your database from backup is then possible if something goes wrong.

youdao