摘要
数据仓库是实现数字地球、数字国土的数据基础,是实现空间数据共享的关键技术之一。但目前国际上的地学数据仓库,其设计并没有考虑到地学数据的多源、多分辨率、多格式等特点,只是商业数据仓库在地学领域的简单照搬,所应用的领域也比较有限。基于矿产资源预测的地学数据仓库系统的设计,按数据流向可分为四层:常规数据库、基础数据库、主题数据库和应用系统。在这种框架中,库间数据的转换、库中数据的组织、数据引擎等是系统设计的关键问题。示例给出了云南省1:200000数据仓库的系统原型。
The data warehouse is one of key techniques in the spatial data sharing, digital earth and digital land designing. The current techniques of Geological Data Warehouses (GDW) neglect, however, the features of geological data, such as multi-source, multi-resolution and multi-format etc., and thus their applications are also limited. According to their data flow, a GDW consisted of four layers: ordinary database, basic database, thesis database and application system is put forward in the paper. The data transfer between databases, the organization of database and data engine are its key techniques, and the system prototype of the geological data warehouse is given with an example of Yunnan Province.
出处
《物探化探计算技术》
CAS
CSCD
2004年第4期351-354,共4页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国土资源部"十五"重点项目(20010305)
