topological error造句

• The first generation spatial analysis database system , sadbs , uses " realms " as expression base of spatial data . it adopts discrete integer coordinate system to solve topological error in spatial database . it also uses multi - index data organization and plane - sweep algorithm , which improve the performance of spatial analysis operations
  第一代空间分析数据库系统sadbs使用realms作为空间数据的表示基础，它利用离散化的整数坐标系统，解决了空间数据库的拓扑误差问题；使用多索引的数据组织方法，引入平面扫描算法，提高了空间分析操作的性能。