到2015年，全国286个城市将拥有地理空间信息数据库。
By 2015, 286 cities will have geographical information databases.
网络环境下的数据集中的近邻对查询在地理信息系统、网络查询和空间数据库等领域有着重要的应用。
The near neighbor pair query of the datasets in the network has important application in geographical information systems, query in the network and spatial database.
目的建立江苏省疟疾地理信息系统(GIS)数据库和疟疾流行GIS模型，对江苏省的疟疾流行区进行空间分析。
Objectives To perform GIS spatial analysis on malaria transmission patterns in Jiangsu after setting up a malaria database and developing GIS model of malaria transmission in Jiangsu province.
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