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。
The article expatiates on a method of establishing heterogeneous data sources to connect the information model and the metadata mapping model by using the XML DTD modeling technique.
本文论述了使用XMLDTD建模技术，分别建立各个异构数据源连接信息模型与元数据映射模型的方法。
The paper also presents CVP modeling method and heterogeneous simulation method, and presents the architecture of the CVP based collaborative design environment.
文中还讨论了协作虚拟样机建模方法和异构仿真方法，并给出了基于协作虚拟样机的协同设计环境的总体结构。
The connection between dual kinds of heterogeneous CAD systems and the FEA auto-modeling system was realized.
实现了多个异构的CAD系统与有限元自动建模系统的连接。
The connection between dual kinds of heterogeneous CAD systems and the FEA auto-modeling system was realized.
实现了多个异构的CAD系统与有限元自动建模系统的连接。
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