网格环境下的异构空间数据库集成技术

网格建立在服务的基础之上，使得空间数据库在网格环境中面临着如何提供相应的数据库服务、异构系统间的空间数据集成、空间数据如何进行互操作等问题。该文针对网格环境下异构空间数据库之间数据集成的困难，提出将OGSA-DAI中间件技术引入到空间数据库系统应用中，对OGSA-DAI进行空间数据访问的扩展，以实现异构空间数据库的有效集成，通过一个应用实例验证该方法的可行性。

Integration of Heterogeneous Spatial Databases in Grid Environment

Because grid is set up on the basis of services, it makes spatial database face the problems in grid environment such as how to provide corresponding database service, how to implement spatial data integration among heterogeneous databases system and spatial data interoperability, etc. Focusing on the difficulty of the heterogeneous spatial database integration, this paper discusses how to introduce the middleware of Open Grid Services Architecture-data Access and Integration(OGSA-DAI) to spatial database application, expands the interface of OGSA-DAI with the function of spatial database access, and implements the integration among the heterogeneous spatial databases effectively. Experiment validates the feasibility of the method.