长江泥沙信息系统中的“多S”结合与集成

"Multi-S" combination and integration in Information Analysis and Management System on Hydrology and Sediment of the Yangtze River

水文泥沙信息具有多源、多类、多量、多维、多时态和多主题特征,其信息分析管理系统的开发采用了“多S”结合与集成化技术。该“多S”集成的大系统是一种以分布式主题数据库(含属性数据库与空间数据库)为核心的综合技术系统,其功能结构是技术方法与应用模型的层叠式复合结构。系统采用国家与行业标准、规范和数据网格(data grid)技术和数据网格应用工具,是保证多源异构数据转换交流畅通无阻的前提和条件;而采用面向对象分析、面向对象设计和面向对象语言,并建立“多S”数据的一体化管理、语义和非语义信息的自动提取的概念模型与数学模型,解决了数据自动更新、数据实时通讯和数据分析可视化等技术难题,初步实现了操作集成。该系统总体上采用C/S与B/S结合的设计方式,并引进了应用系统层、中间服务层和数据库层的3层映射模式。

Information of hydrology and sediment has characteristics of multi-source,multi-sort,multi-quantity,multi-dimension,multi-time-domain,and multi-subject.The development of the hydrology and sediment information analysis and management system makes use of technologies of 'multi-S' combination and integration.The large 'multi-S' integration system is a comprehensive technology system with distributive subject database(including attribute database and space database) as a core.The functional structure is a laminated composite structure of technologic methods and applied model.The application of state standards,industrial codes,data grid technology and applied tools in this system is the prerequisite condition to ensuring the multi-source and different-structure data to smoothly transform and exchange.Adopting the object-oriented language and establishing the concept model and mathematical model of multi-S data integration management and automatically taking semantic and non-semantic information has solved difficult technical problems on automatic data update,real-time data communication and data analysis visualization etc.,and basically realized the operational integration.This system generally adopts a design mode of combinating C/S with B/S and introduces a 3-layer mapping mode of applied system layer,middle service layer and database layer.