【摘要】 在分析R 树索引问题的基础上 ,提出了一种面向大型GIS空间数据库的QR 树索引新方法更多还原

【Abstract】 Spatial indexing techniques can efficiently improve the storage and query efficiency. IN the large spatial database of GIS, the traditional spatial indexing structures, the R-tree has the problem that with the growing dimensionality and data number, the searching function will decrease greatly. On the basis of the analysis of R-tree, this paper puts forward a new spatial indexing structure for GIS with very large spatial database-the QR-tree.更多还原