The controller is provided by a servlet that runs in the embedded Jetty Web server, and the Derby database ACTS as the back end and represents the model layer for the application.
控制器由一个servlet提供，该servlet运行在嵌入式Jetty Web服务器中，而Derby数据库则充当后端，表示该应用程序的模型层。
Next, you create a data source in the WebSphere Process Server to connect to the database layer.
接下来，在WebSphere Process Server中创建数据源，以连接到数据库层。
To connect to a DB2 or Cloudscape database server, the Unified ODBC extension for PHP relies on the Call Level Interface (cli) layer of the DB2 client.
为了连接db 2或Cloudscape数据库服务器，PHP的统一odbc扩展需要依赖DB 2客户机的调用级接口(Call Level Interface, cli)层。
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