However, traditional spatial database systems can not efficiently satisfy both requirements.
然而传统的空间数据库系统难以有效地满足以上两种需要。
Spatial join is one of the most complex and time-consuming operations in spatial database systems.
空间连接运算是空间数据库中的一种基本操作，但它也是最复杂、最耗时的操作之一。
Efficient processing of operations in spatial database systems relies upon auxiliary spatial indexing mechanism.
空间数据库系统通过引入空间索引机制来提高空间数据操作的效率。
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.
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。
After studying the analysis and comparison of the realization techniques of spatial database system and spatial data mining systems, we propose a development model of spatial data mining system.
在对空间数据库系统实现技术及空间数据挖掘系统等进行比较分析的基础上，提出了一种空间数据挖掘系统的实现模式。
Emphasis on spatial analysis using geographic information systems and database query tools.
本课程将强调利用区域资料系统和数据库查询工具进行空间分析。
Since distributed spatial database will be the main data source of Internet GIS, we have to cope with the intercommunication between heterogeneous databases and systems.
随着空间数据获取能力的飞速发展，分布式存储管理的空间数据库将成为网络GIS的主要数据源。
This paper analyzes the current Database Systems in GIS, then a new Spatial Database System Model (SDB-SM) is introduced, which adapt to intelligent Spatial Decision Support System (SDSS).
文章通过对现有GIS中空间数据库系统模型的分析与比较，提出了一个适用于智能化空间决策支持系统(SDSS)的空间数据库系统模型。
This paper analyzes the current Database Systems in GIS, then a new Spatial Database System Model (SDB-SM) is introduced, which adapt to intelligent Spatial Decision Support System (SDSS).
文章通过对现有GIS中空间数据库系统模型的分析与比较，提出了一个适用于智能化空间决策支持系统(SDSS)的空间数据库系统模型。
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