In order to build a middleware bridge between the front-end CGI display code and the back-end database and business logic code, an API that allows all necessary data access must be defined.
为了在前端CGI显示代码和后端数据库及业务逻辑代码之间构建一个中间件桥，必须定义一个允许所有必需数据访问的API。
A screen similar to Figure 27 will display when the deployment of PBA and the middleware finishes without any errors.
当PBA和中间件的部署完成且无任何错误时，系统将显示类似于图27的屏幕。
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