In the soil resource management information system based on GIS, the most basic operations are the operation of map, the attribute data inquiry and statistics and spatial data inquiry as well.
在基于GIS的土壤资源管理信息系统中，最基本的操作是对地图的操作、属性数据的查询和统计以及空间数据的查询。
With the function of spatial data management, the system can realize coupling inquiry, conditional inquiry and special subject inquiry about spatial data and their attributes of objectives.
该系统具有空间数据管理的特性，可实现对象的空间分布和属性的耦合查询、条件查询、专题查询等功能。
Spatial information inquiry and index: which contains inquire map information from attribute information, inquire attribute information from map information, statistical analysis, DEM inquiry, etc.
空间信息查询与检索：包括属性查图、图查属性、统计分析、DEM查询等。
Continuous nearest neighbors (CNN) inquiry is important in spatial-temporal database.
连续近邻查询(CNN)是时空数据库中一种重要的查询类型。
Continuous nearest neighbors (CNN) inquiry is important in spatial-temporal database.
连续近邻查询(CNN)是时空数据库中一种重要的查询类型。
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