从该阶段开发正式进入软件的实际开发阶段，本阶段完成系统的大致设计并明确系统的数据结构与软件结构。概要设计说明书的目的就是进一步细化软件设计阶段得出的软件总体概貌，把它加工成在程序细节上非常接近于源程序的软件表示。-From the formal entry into the software development phase of the actual development phase, the phase of system design and a clear system in general data structure and software architecture. The purpose of a summary of the design specification is to further refine the design phase of software to draw a general picture of the software in general, it processed into the details of the procedure is very close to the software source said.