【摘要】 森林资源管理信息系统在发展过程中积累了大量的异构数据,导致了各种系统间的数据不能进行有效共享,系统操作人员重复劳动多,差错率高,森林资源管理部门人员难以利用现有数据进行有效的决策分析。如何将这些异构数据进行有效集成,这是实现林业信息化亟待解决的一个重要问题。分析了目前森林资源管理信息的数据集成需求,对各种数据集成的常用中间件技术进行了比较,提出了森林资源异构数据集成系统的分层结构模型。这种结构模型包含信息源层、XML中间件层、XML接口层和表现层。论述了基于XML的数据集成系统的中间件层的实现。图1参9更多还原

【Abstract】 Large amount of heterogeneous data have been accumulated along with the development of the forest resources management information systems.The result of this is that data are not effective shared among various systems and the operators repeat work with high error rate.Therefore,the decision-making is difficult made by the manager through the existing data.The emergent issue is how we integrate the heterogeneous data.First,this paper analyzes the demand of data integration of the current forest resources management information system and compares the various middleware technology.Secondly,this paper proposes the model with layer structure,which servers for the integration of the heterogeneous data of forest resources management systems.This model consists of:(1)information source layer;(2)XML middleware layer;(3)XML interface layer;(4)XML presentation layer.Finally,the paper discusses the implementation of data integration system based on XML,using XML middleware layer.[Ch,1 fig. 9 ref.]更多还原