The implementation class name is never used by other layers of the data access application; they always reference and use the user-defined data access interface.
数据访问应用程序的其他层不会使用实现类的名称；它们总是引用和使用用户定义接口。
2
It's easy; just replace the skeleton class name with your implementation class name.
所需的工作很简单，直接使用实现类名称替换框架类名称即可。
3
The implementation class name and class path you see are the default for the DB2 JDBC provider.