The spatial database is both the core and the key to GIS while the data model is the premise and the foundation for a spatial database.
空间数据库是GIS的核心与关键，而数据模型是空间数据库的前提与基础。
One of the most important factors is that GIS can provide powerful spatial database and query and analysis functions based on this database.
其中最重要的原因就是GIS具有不同于一般制图系统的强大的空间数据库以及建立在数据库基础上的查询和分析功能。
Spatial database index is the vital technique for improving the storage efficiency of spatial databases and the spatial retrieval performance.
空间数据库的索引是提高空间数据库存储效率、空间检索性能的关键技术。
As the application of information technology enlarges its scope in the fields of land and mineral resources, the theory, technology and practice of spatial database concept become very complete.
随着信息技术在国土资源部门的广泛应用，空间数据库理论、技术和实践日臻成熟。
Main memory spatial database needs its own spatial indices.
主存空间数据库需要相适应的空间索引。
The system includes a spatial database and an attribute database.
该系统包括空间数据库和属性数据库两部分。
Then, the spatial database was set up based on "3s" technological system.
基于“3s”技术建立小流域空间数据库。
The system consists of a series of theme spatial database and basic GIS database.
整个系统是由一系列专题空间数据库和基础地理信息数据库组成。
Optimize the spatial database by improving space data index performance based on SDE.
引入SDE空间数据索引技术，通过改善空间索引的性能来优化空间数据库。
One of the most important algorithms in spatial database is reverse nearest neighbor query.
反向最近邻查询是空间数据库中最重要的算法之一。
Data sets of point and interval dimensions are important in spatial database system and GIS.
点和区间混合型维度数据集是空间数据库系统和GIS中重要的数据对象。
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。
The spatial database model and the new map management manner can extend to the other fields.
这种数据库结构模型和图层与块相结合的地图管理方式易于扩展到其他领域。
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 condition testing of active rules in spatial database is a key element to the efficiency of rules execution.
空间数据库的主动规则条件测试对于规则的执行效率至关重要。
There have been a great variety of spatial data structures to support such operations since researching spatial database.
自从对空间数据库进行研究以来，已经出现了许多支持这些操作的空间数据结构。
Being the kernel of spatial database, spatial database engine is capable of managing and maintaining spatial data efficiently.
空间数据引擎是实现空间数据库的核心，能有效存储和管理空间数据。
Improve the rules of comparing the security label, which meet the practical demand of the Access Control for spatial database.
改进了安全级比较的规则，使得更适合现实中空间数据存取控制的需求。
Third, creation, management and data seamless integration of basic geo-spatial database, theme database and land use database.
第三、基础地理空间数据库、专题数据库、土地利用数据库的建立、管理和数据无缝集成。
The nearest neighbor query on the spherical surface has great significance in the nearest neighbor query of the spatial database.
球面上的最近邻查询在空间数据库最近邻查询领域具有重要的意义。
The spatial database of the urban resources and environment information system was established in the central area of Guiyang city.
以贵阳市中心城区为试验区，建立城市资源环境信息系统空间数据库。
Jay and his mentor are trying to integrate the existing data mining algorithm to the IBM spatial database software development kit.
姚君杰和他的指导老师在做的项目是将现有的数据挖掘算法与IBM的空间数据库软件开发包相整合。
Field information real-time collecting and spatial database update are key techniques to be urgently solved in precise agriculture.
田间信息的实时采集与数据库更新是精准农业技术体系中急需解决的关键技术之一。
The basic spatial database is the core of the digital City, and the quality of spatial data is the key factor in database construction.
基础空间数据库是数字城市的核心，而数据质量的高低又是数据库建设成功与否的关键。
The process flow of building a spatial database is very vital to the general technical process of the digital geological survey system.
空间数据库建库流程是数字地质调查系统总体技术流程的一个重要组成部分。
As a concrete application of spatial database, nearest neighbor query of spatial data has attracted more and more attention in reality.
空间数据近邻查询作为空间数据库在现实生活中的具体应用，受到人们越来越多的关注。
The system structure distributed in spatial database is always the focus of theoretical research and the problem that projects must face.
空间数据库的分布式体系结构一直是理论研究的热点和工程实践必须面对的问题。
According to the spatial database building in Nanjing planning bureau, this article describes the process of data loader for vector data.
以南京市规划局矢量地形图数据建库为例，详细地描述了矢量数据入库的处理过程。
According to the spatial database building in Nanjing planning bureau, this article describes the process of data loader for vector data.
以南京市规划局矢量地形图数据建库为例，详细地描述了矢量数据入库的处理过程。
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