摘要
为了解决分布式地质图空间数据库之间的数据共享和一致性维护问题,在MAPGIS7 .0面向地理实体的空间数据模型的基础上,根据地质图空间数据组织和分布的特点设计了一种“横向网格、纵向多级”的分布式多级服务器组网方案,结合该方案提出了一种以地质空间要素类为单位,面向服务的数据交换策略.该策略在国家地质调查空间数据库管理系统中的应用表明:以要素类为基本数据交换单位可以有效地维护分布式地质数据的空间、拓扑和语义的一致性;以服务的方式操作使数据交换能够跨平台、跨操作系统以及适合异构数据库.实践证明,这种策略是适合于分布式地质图空间数据库的一体化组织与管理的.
The main purpose of this study is to solve the problem of data sharing and consistent maintenance in distributed geological spatial database. Based upon the spatial data model of MAPGIS7.0 and the characteristics of data distribution, this paper designs a distributed multi-level server network architecture called ＂grid horizontal and multi-levels vertical＂. Under the arehiteeture,a data exchange strategy is presented which regards geological feature class as elementary unit and it is service-oriented. The application of the strategy to nation＇s geological spatial database system demonstrates that： the spatial, topological and semantic consistence can be maintained effectively by means of exchanging data with geological feature class, and service-oriented operation can deal with data exchange between different operating systems and databases. In conclusion this strategy is suitable for the integrated management of a distributed heterogeneous geological spatial database.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2006年第5期659-662,692,共5页
Earth Science-Journal of China University of Geosciences
基金
国家"863"计划:基于大型GIS地质调查空间数据库管理系统(No .2003AA132010)
武汉市重大科技产业化专项项目
