对于第二个示例，最终只能执行备份和恢复。

For the second example, ultimately, we had to go to backup and restore.

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始终在域级别执行备份和恢复。

Always perform a domain level backup and restoration.

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更复杂的组件可以使用它自己的库来存储内容、定义定制角色(用来定制功能)并执行备份和恢复操作。

A fairly complex component could use its own library to store contents, define custom roles that are used to tailor its functionality, and participate in backup and restore operations.

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