【摘要】 元数据是数字地球建设的关键技术之一,是建设信息化城市和实施空间信息网格基础设施的重要内容。本文基于Web服务对象及其标准,建立了分布、异构的网格环境下的元数据服务管理模型,包括基于Web服务的空间元数据共享服务体系、空间元数据服务与发布流程及其实现。最后,探讨了如何使用目前JAVA技术中比较流行的JDBC和懒加载技术开发空间元数据服务管理模型。更多还原

【Abstract】 Metadata is one of the key technologies of Digital Earth, which is also an important part in building the Information City and implementing the SIG infrastructure. Based on the researching in the standards and objects of web services, the authors came up with a service framework of metadata service and management in the distributed heterogeneous network environment. It includes the architecture of spatial metadata sharing service system on the basis of Web service, spatial metadata service and process of promulgation. In the end, we discuss how to use JDBC and lazy loaded, which are popular methods to develop the mode of spatial metadata service and management system and related to the JAVA technology.更多还原