The application of UML in the development of CRM sale system online

Information technology and network technology is developing rapidly, the relationship between firms and customers are becoming increasingly important. According to the management characteristics of CRM, the paper applies modeling methods and tools of UML to analyze and design sale management system online. This paper builds system development models, including the use case diagrams, the class diagrams, the activity diagrams and the timing diagrams, and develops the system for a sale company. It proves that UML can be used in sale system online designing and make the progress more easy and effective.