First, we modify the migration script that was generated.

首先，修改已经生成的迁移脚本。

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There is also a post_migration script that you can run to verify the migration.

也可以运行一个post _ migration脚本来验证迁移。

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I then implemented the migration script taking as a basis code fragments defined in (B. Richmond, 2004) (R6).

随后，我执行移植脚本作为(B . Richmond, 2004)中定义的基本代码片段(R6)。

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