摘要
传统的基础地理信息数据库以关系型数据库为主,数据的空间检索主要借助空间关系运算和数据库索引来实现,对海量数据的检索效率低。为提高数据库检索效率,以地球空间网格为基础,提出一种基于地球空间网格的基础地理信息数据库空间索引方法,实现基础地理信息数据库的全库数据空间索引,为基础地理信息数据库的高效管理提供技术支撑。实践结果表明,该算法与传统的空间检索方法相比,检索效率平均提升1.5倍,部分数据可提升4倍以上。
The traditional basic geographic information database is mainly based on relational database,and the spatial index of data is realized mainly by means of spatial relationship operation and database index,which is inefficient in massive data searching.In order to improve the efficiency of database retrieval,a method of spatial index of basic geographic database based on geospatial grid is proposed,which realizes the spatial index of the whole database of basic geographic database and also provides technical support for the efficient management of basic geographical database.The results show that compared with the traditional spatial retrieval method,the retrieval efficiency based on this algorithm is improved 1.5 times on average,and some data can be improved by more than 4 times.
作者
王乃生
吴鑫
庞晓峰
勾会杰
WANG Naisheng;WU Xin;PANG Xiaofeng;GOU Huijie(Shaanxi Geomatics Center,MNR,Xi′an,Shaanxi,710054,China;Xi′an Water Conservancy Planning Survey and Design Institue,Xi′an,Shaanxi,710054,China)
出处
《测绘标准化》
2022年第2期23-26,共4页
Standardization of Surveying and Mapping
基金
陕西测绘地理信息局科技创新项目(SCK2019-03)。
