没有对JDBC驱动程序的引用，没有服务器名称，没有用户名称或口令——甚至没有数据库池或连接管理。
No references to JDBC drivers, no server names, no user names or passwords — not even database pooling or connection management.
负责管理设备的驱动程序部分与它服务的操作系统的具体实现细节是分开的。
The portion of the driver that is responsible for managing the devices is separated from the specific implementation details for the operating system it serves.
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