Additional Database Features的意思|示意

If you require additional scalability and more advanced database server features you can deploy the same PHP applications (with very minor changes) to use a DB2 UDB server instead.

如果您需要附加的可伸缩性以及更多的高级数据库服务器功能，那么可以部署相同的PHP应用程序(通过极其少量的修改)来使用DB 2 UDB服务器。

Each database driver that implements the PDO interface has the option of exposing additional database-specific features as regular extension functions.

实现pdo接口的每个数据库驱动程序可以选择公开附加的数据库专用特性作为标准扩展功能。

Future updates will introduce additional database categories and other useful features.

未来的更新将引入额外的数据库类等实用功能。