论文部分内容阅读
基于中国数字海洋建设的经验和成果,制定了海洋数据要素的分类方案,将海洋信息分为5大类:海洋点要素、海洋线要素、海洋面要素、海洋网格要素、海洋动态要素。采用基于特征的方法和面向对象的技术设计了适合数字海洋大型信息系统工程建设的时空数据模型,探讨了海洋空间数据模型、海洋立体格网数据模型、关系数据模型在数字海洋数据仓库建设中的应用,并总结了其优缺点。
Based on the experiences and achievements of China’s digital ocean construction, a classification scheme of marine data elements has been formulated. The marine information is divided into five categories: marine point elements, ocean line elements, ocean surface elements, ocean grid elements and marine dynamic elements. The spatio-temporal data model suitable for the construction of digital ocean large-scale information system is designed using feature-based method and object-oriented technology. The models of marine spatial data model, marine three-dimensional grid data model and relational data model are discussed in the construction of digital ocean data warehouse Application, and summarizes its advantages and disadvantages.