智慧职教: 中间件（middleware）是与操作系统、数据库并列的三大基础软件之一

什么必须定义在app/controller目录中（） A: Controller B: Controllers C: Middleware D: Middlewares

To bridge the gap between a database and the Web and enable data to be viewed and updated, it is necessary to use __________, which is software that integrates different applications and allows them to exchange data. A: middleware B: hardware C: shareware D: freeware