R树索引树的代码,用于空间数据库索引，是先进比较流行的数据库索引算法-R-tree index tree code, the index for spatial databases, advanced database indexing algorithm more popular

通过本文学习，既可以掌握已成熟的空间数据库的管理模式和数据模型，也可以了解当前空间数据库的最新动态和发展趋势-Through the study of this article can have a mature grasp of the spatial database management model and data model, can also understand the latest developments in spatial databases and development