地形数据库增量信息数据建模及其RDF描述  

Modeling of Incremental Information in Topographic Database and Its Description Based on RDF

作　　者：朱华吉[1] 

机构地区：[1]中国科学院遥感应用研究所,北京100101

出　　处：《吉林大学学报（地球科学版）》2007年第1期195-199,203,共6页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(40337055);国家"863"计划项目(2002AA131040)

摘　　要：为了保持用户数据库现势性,需将数据库更新过程中产生的增量信息及时发布给用户。而增量信息的建模与描述是实现发布的前提。以中国1∶25万地形数据库的两个版本为例研究了增量信息的数据建模和数据描述的问题。提出了基于超图数据模型的建模和基于资源描述框架(RDF)的增量信息描述方法。该方法能够以统一的方式实现不同增量信息的建模和描述,具可行性和有效性。For keeping reality of user＇s database, the incremental information created by updating need to be given to users in time. However, the modeling and its description are realized preconditions. Taking two versions of the topographic database with scale 1 ： 250 000 in China as an example, the questions were studied on data modeling and its description. The author put forward the modeling method based on hypergraph data model （HDM） and its description on the basis of RDF （resource description framework）. It can realize the modeling and description for different incremental information using a uniform style, with feasibility and validity.

关 键 词：地形数据库 增量信息 超图数据模型 数据建模 资源描述框架 

分 类 号：P628.4[天文地球—地质矿产勘探]