【摘要】 国土资源数据集成管理体系是连接诸中心综合信息库、各分节点区域信息库的分布式空间信息集成管理系统,它主要在分布式、多源异构的国土资源数据环境下提供数据汇聚、数据集成、数据发现、数据访问和数据服务等功能,为各类用户和应用系统提供广泛有效的数据共享和交换服务。针对国土资源数据具有的多源、多级服务等需求特征,本文分析了集成模式,应用服务结构和服务请求消息流程与协议等技术,以期对分布式网络环境下的国土资源数据一体化集成和动态服务提供支撑。更多还原

【Abstract】 As the diversity of the land and resource data,it has different metadata content and integrality restriction description information. The land and resources data management platform need both the common requirement of metadata based data searching and individuality description for different kinds of data. Firstly,the characteristic of the land and resources data is analyzed in this paper.Then the metadata expanded modeling based land and resources management technology is studied in the next part. The technology realized the function of customization of the metadata model,which includes metadata factors grouping,defining and thematic modeling.In the end,the achievement is validated by the case study of the land and resources data management platform of Shanxi Province,China.更多还原