门户和每一个系统之间的接口约定是在方法的设计阶段设计和记录的。

The interface contract between the portal and each system is designed and documented during the design phase of your methodology.

youdao

因此，随后的开发方法不是典型的“瀑布”方案，在瀑布方案中，收集需求之后进行分析和设计，并进行系统的实现。

Hence, the development approach that is followed is not the classic "waterfall" scenario, where requirements gathering is followed by analysis and design, leading to the implementation of the system.

youdao

在面向对象的分析和设计方法中，系统接口通常被视为契约。

In Object Oriented Analysis and Design Methodology, a system interface is most often viewed as a contract.

youdao