在这一层，项目经理需要与外部项目协调、处理企业发布计划和企业报告。

At this layer the project manager coordinates with external projects, with the enterprise release planning and enterprise reporting.

youdao

由于这个项目对服务级别的要求很低，因此使用一个外部数据库来处理查询并没有什么好处。

Since this project required an almost trivial level of service, there would be no benefit to passing queries to and from an external database.

youdao