现在我需要执行一个简单的核心数据轻量级迁移，我已经创建了新的版本化模型并激活它。

Now I need to perform a simple core data lightweight migration and I have created the new versioned model and activated it.

youdao

现在我需要执行一个简单的核心数据轻量级迁移，我已经创建了新的版本化模型并激活它。

Now I need to perform a simple core data lightweight migration and I have created the new versioned model and activated it.

youdao