省级国土资源数据物理存储策略及效率分析——以陕西省多级国土资源数据为例

Study on Physical Storage Strategy and Efficiency for Land and Resources Data of Province: A Case Study of Land and Resources Data of Shaanxi Province

国土资源数据高效存储技术及策略是国土资源信息化的基础。本文基于对省内多级行政单元国土资源数据特征及管理需求分析,提出了省内多级行政单元国土资源数据应用模式及数据布局策略,并以陕西省实际数据为例,对省级土地利用数据库的地类图斑要素层,按县级多实例、全省单实例(不进行布局控制)和全省单实例(按县进行数据库分区布局)三种布局策略下的数据访问性能进行了测试和对比分析,形成了对我国国土资源数据管理部门具有重要参考价值的结论。

The high efficiency of physical storage and strategy of the land and resource data is the base for management. Firstly, the characteristic and requirement of the land and resources data of a province is analyzed in this paper. Then the application model and data layout strategy is studies in the next part. Taking the land and resources data of Shaanxi Province as example, the data input/out- put performance is tested and analyzed under three different physical storage strategies, which includes the multi - instance for a coun- ty, single instance for a province（ no layout control） and single instance for a province（with layout control）. In the end, the conclu- sion is achieved which has valuable reference for other province of China.