面向Web的地学数据共享服务平台架构设计

针对地学数据的特点,设计了地学数据Web共享服务平台的总体架构。该共享服务平台由5个层次组织,分13个功能模块,其中元数据管理和元数据服务是该平台的基础设施。利用W3C推荐的RDF/XML设计和构建了该模块,并用ArcIMS提供的空间数据发布引擎和7个必要的元数据接口实现了空间数据的发布。平台体系通过A鄄pache+Tomcat+ArcIMS的系统部署,提供Web共享服务。

Study on Web-oriented Geo-data Sharing Platform System Structure

It is difficult to realize the Web-oriented geo-data sharing, because geoscience features a wide range of more than a dozen specialized areas. This paper studies the principal structure of geo-data sharing network platform taking into consideration of these features.Designed geo-data sharing platform is composed of 5 parts, which includes website portal, data sharing business tier, core service tier, data sources management tier and network foundation. Thirteen function modules are organized in this architecture efficiently.The development of metadata theories and their application techniques provide a solution to mass data sharing in web. In this platform, metadata management and services modules (MMS) serve as the infrastructure. They are designed and built based on RDF/XML models recommended by W3C. The foundation′s hierarchy includes 3 tiers, i.e., application tier, RDF/XML resource management tier, and data resources tier. RDF/XML, served as a middle tier, plays an important role in MMS. As a typical data of geoscience, geospatial data can be published via this platform. Its prototype is researched and developed by means of 7 selected metadata ports and WebGIS technologies.The running environment of Web-oriented geo-data sharing platform is built up with support of Web server and several application servers. Research and experiment showed that Apache + Tomcat + ArcIMS server can work well in the system structure′s physical deployment.