到目标的数据应用：复制需要像属性一样的列(例如，从源表的INTEGER NOT NULL到别名上的INTEGER NOT NULL)。
Application of data to targets: Replication requires columns of like attributes (for example, INTEGER NOT NULL from the source table to INTEGER NOT NULL at the nickname).
一旦向数据库添加了应用程序代码，就需要移动或复制数据库，以确保适当的应用程序逻辑是随数据一起移动的。
Once the application code has been added to the database, moving or copying the database ensures that the appropriate application logic is moved along with the data.
你可以复制照片和音乐，而开发者可以复制缓存和其他应用数据。
You can copy photos and music on there while developers can copy caches and other application data.
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