在编写《房屋中介系统》软件之前，对同类型产品的市场进行了前期调查，与多位软件设计者和使用者进行了探讨和分析，之后由软件项目小组向系统分析人员与软件设计人员提出了这份需求规格说明书。该需求规格说明书对图书管理系统软件进行了全面细致的用户需求分析，明确所要开发的软件应具有的功能、性能与界面。该需求规格说明书供概要设计人员阅读。-In the preparation of " real estate agent system"　before the software of the same type of products in the market survey carried out early, with a number of software designers and users is discussed and analyzed, followed by the software project team to systems analysts and software designers make of the requirements specifications. The requirements specifications of the library management system software for a comprehensive and detailed user needs analysis, specific software to be developed should have the features, performance and interface. Summary of the requirements specifications for designers to read.