此场景假设该库的数据类型和映射已经存在，因此本文将不介绍如何创建它们。
This scenario assumes that the library's data types and maps already exist, so this article will not cover how they are created.
通过支持对象、数据和授权迁移来支持数据库迁移场景。
Supports object, data, and authorization migration in support of database migration scenarios.
同样，在数据库恢复场景中，用户或应用程序可能会意外地删除某个表格。
Similarly In the database recovery scenario, a user or application might accidentally delete a table.
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