The implementation contains methods encapsulating all required SQL statements for data access and manipulation.
该实现包含封装所有用于数据访问和操纵的sql语句的方法。
See Listing 2 in the download ZIP file for the implementation of these four methods.
请参阅下载 ZIP 文件中的 清单 2,其中有这四个方法的实现。
For example, utility methods on the implementation class don't have to exist on the remote interface.
例如,实现类的实用程序方法不必放在远程接口上。
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