The design flow is as follows: design of distributed spatial database, design of interface for the system, design of application servers and design of clients.
系统原型设计按照空间数据库设计、系统接口定义、应用服务器设计、分布式对象实现和客户端设计几个步骤进行。
The system structure distributed in spatial database is always the focus of theoretical research and the problem that projects must face.
空间数据库的分布式体系结构一直是理论研究的热点和工程实践必须面对的问题。
Based on the unified data modeling, this resolution realizes the uniform request service to distributed heterogeneous spatial data by metadata and multi-database system.
该解决方案通过建立统一的数据模型，使用元数据与多数据库系统实现了对分布的异构的空间数据的统一访问请求服务。
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