Drafting sales plans is one of the important tasks for marketing companies. Many aspects of information need integrating in the process of establishing plans of coal sales. In order to solve the problem of heterogeneous data structure and normalize data format,based on the contrastive analysis of existing data integration technologies,put forward a model to integrate heterogeneous data source inside and outside the enterprises. This model calls Web service to obtain heterogeneous data to solve the real-time problem,and introduces a tech-nology,by which XML is transformed to entity objects and then is stored,to deal with the results of requests. In this way,a real-time que-ry and the function of data analysis are combined in the model,achieving the integration of heterogeneous data on the premise of guaran-teeing the dependence of external data source. Besides,its validity has eventually been checked in practical use.%销售计划的制定是销售企业重要工作之一，制定煤炭销售计划需集成多方面的信息。在对比分析现有数据集成技术的基础上，提出一种集成企业内、外部异构数据源的模型，以解决数据的结构异构和数据格式统一问题。模型通过调用Web服务获取异构数据源数据，解决了数据的实时性问题，对请求结果的处理运用了将XML转化成实体类对象进行存储的技术，使模型融入了数据分析功能。在保证企业外部数据源独立性的前提下实现了异构数据集成，并经过实际应用验证了其有效性。
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