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With the continuous development of Internet technology and the popularity , consumers began to enterprises and their products on the network . In this environment , companies need to use the Internet for product promotion , sales and build brands , improve the competitiveness of enterprises . Currently in China , the business model of the small and medium - sized manufacturing enterprises is relatively backward , disjointed information , funding , logistics , and outside the enterprise , in order to change this situation , some companies use sales management system , but only limited to the internal management and control . In this case , the enterprise can not meet today's economy , changes in the market , and not be able to respond quickly to market changes . Enterprises to update the marketing concept , should be customer-centric , internet - based information construction , integration of internal and external resources , so that enterprises can efficiently manage customer relationships and sales management , has won a long-term competitive advantage of enterprises . In this paper, an automobile plant in Harbin, sales management status , analysis of the sales management system functional requirements analysis system modeling using UML modeling techniques . Use cases through the system, as well as participants in the modeling process , the establishment of a use case model , using a class diagram system static model , as well as timing diagrams and activity diagrams to establish a system dynamics model . In the system database and the framework structure based on static and dynamic models of the functional analysis and system design . Then a combination of time series , exponential smoothing forecasting model and RBF neural network forecasting model , a combination of sales forecasting model to predict sales . Finally, using visual basic to achieve some of the features of the system . Stable operation of the system , to good effect , reduce the workload of the relevant departments , and enhance the management of the new and old customers of the enterprise , and provides the perfect query analysis and forecasting functions , so that managers can quickly analyze market conditions , made quickly and efficiently reflect the production and operation , improve the enterprise 's ability to respond to customer needs .
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