设计一个软件，需要进行用户需求分析、系统需求确认、系统概要设计、设计用例场景、系统的详细设计、数据库详细设计、编码、单元测试、集成测试、系统测试、维护等活动。要求用户需求分析在系统需求确认之前完成，系统的详细设计必须在系统的概要设计、设计系统用例和设计用例场景之前完成。-A software design, the need for user needs analysis, system requirements confirmation, the system level design, design use case scenarios, detailed design, database detailed design, coding, unit testing, integration testing, system testing, maintenance and other activities. Requires the user needs analysis confirmed the system requirements before the completion of the detailed design of the system must be in the schematic design, design systems and design of use cases completed before the use-case scenarios.