Nonautomatic accessors require you to explicitly retrieve the data.

非自动存取子会要求您明确地撷取资料。

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Use a nonautomatic accessor if you are binding to a large data field (like a bitmap image) that you might not want to retrieve for every record.

如果您正在系结不想从中撷取每一笔资料的大型资料栏位 （例如点阵图影像），请使用非自动存取子。

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Finally, there's an important caveat you need to remember: once a database has been created or converted to use automatic storage, it cannot be converted to a nonautomatic storage database.

最后，有一个重要的警告需要牢记：一旦创建数据库或将数据库转换为使用自动存储，就不能再将数据库转换为非自动存储数据库。

youdao

Finally, there's an important caveat you need to remember: once a database has been created or converted to use automatic storage, it cannot be converted to a nonautomatic storage database.

最后，有一个重要的警告需要牢记：一旦创建数据库或将数据库转换为使用自动存储，就不能再将数据库转换为非自动存储数据库。

youdao