external database file的意思|示意

External file storage is more flexible but does not benefit from database-managed persistency and integrity.

外部文件存储更为灵活，但是无法从数据库管理的持久性和完整性中获益。

The proxy could just have easily stored this value in an external data file or remote database if needed.

代理可以很容易地存储这个值在一个外部数据文件或远程数据库，如果需要。

This data source can be a collection of test data objects, external file or maybe even a database.

数据源可以由测试数据对象，外部文件，或者数据库组成。