Nine Steps to Shorten the Distance between Requirement Theory and Practice

Requirement analysis is a critical but difficult part of software development. With the combination of various requirement analysis methods and practice, a method which carries out requirement analysis through nine steps is proposed. The establishment of three models, business model, preliminary data model and functional model, is the focus of the establishment of a target system. Such method has been applied in the development of a library information system and practice showed that such method is systematic, comprehensive and practical, shortening the distance between requirement analysis theory and practice.