空间数据库是地理信息系统的核心。
GIS的核心是空间数据库。
空间数据库是国家基础设施的重要组成部分。
Spatial Database is one of the important part in national spatial infrastructure.
该系统包括空间数据库和属性数据库两部分。
The system includes a spatial database and an attribute database.
在本文中，我们展示了一些提升空间数据库性能的重要技巧。
In this article we have shown several important techniques to improve performance of spatial databases.
反向最近邻查询是空间数据库中最重要的算法之一。
One of the most important algorithms in spatial database is reverse nearest neighbor query.
对实现环境地质空间数据库的社会化服务有重要意义。
It is of important signification in realizing the socialization service of environmental geology space database.
基础地理空间数据库是搭建“数据城市”的基础平台。
Basic Geography Spatial Database is fundamental platform for building cyber-city.
找到一个高效的索引结构一直是空间数据库研究的重点。
It is always the key technology of spatial DBMS to find a efficient index structure.
而基础地理空间数据库的建设是解决这一问题的根本措施。
So, the building of spatial database is a fundamental measure to solve the problem.
目前普遍使用的基于图层的空间数据库模型存在许多问题。
Layer based spatial database model is widely used now, which consequently causes some difficult problems.
该方法也可应用于其他相应比例尺地理空间数据库的更新。
It is applicable to the renewal of other geographic spatial databases of corresponding scale.
第二部分，海洋环境信息的预处理及空间数据库的建设研究。
Section b: To study the Marine information pretreatment and build the spatial information database.
滑坡因素空间数据库包括滑坡因子数据库和滑坡分布数据库。
Landslide spatial database mainly includes landslide factor database and landslide spatial distribution database.
最后指出在空间数据库中的高维索引的研究是目前前沿研究的热点。
Finally, it is pointed out that the high dimensional index is a hot research field in spatial databases.
系统功能设计包括空间数据库和属性数据库的录入、修改以及预处理；
The function design of system includes writing down amendment and pretreatment about spatial database and attribute database.
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。
Being the kernel of spatial database, spatial database engine is capable of managing and maintaining spatial data efficiently.
构建空间数据库、建立空间信息与税务数据相结合的税务管理空间地图。
We also set up the spatial database in order to make geographic information coordinate with tax indexes.
近年来，针对空间数据库索引的研究引起了人们越来越多的兴趣和关注。
In recent years, the research on spatial indexing is arousing more and more interests and attentions.
空间数据库的索引是提高空间数据库存储效率和空间检索性能的关键技术。
Spatial index is the vital technique for improving storage efficiency of spatial databases and the spatial retrieve 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。
The spatial index is the key technique for improving the storage efficiency of spatial databases and the spatial retrieve 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。
Spatial database index is the vital technique for improving the storage efficiency of spatial databases and the spatial retrieval performance.
本文以GIS技术为基础，对煤矿监测系统空间数据库的应用进行了研究。
This paper, which based on GIS, finished the application study of Spatial Database in Colliery Monitoring System.
安全空间数据库是当前信息安全研究的一个重要分支，具有广泛应用前景。
Security spatial DBMS, which is an important branch of the current information security research, has wide application future.
数据库设计主要解决空间数据库和属性数据库的建立以及它们之间的连接关系。
System database design mainly solves the establishment of spatial database and property database as well as the connection relations between them.
基于系统的总体框架，给出防汛指挥信息支持系统中空间数据库的具体组织策略。
The organization strategy of spatial database in the flood control information system based on the overall system design scheme is submitted in the paper.
另外，该技术还有利于系统空间数据库的维护和管理，保持系统空间数据的现时性。
In addition, this technology helps the maintenance and management of the system spatial database, and keeps the system space attribute data current.
对地理要素的多尺度表达（多重表达）是当前多尺度空间数据库领域的研究热点之一。
The multi-scale representations (multi-representations) for geographical entities is one of research focuses in the field of multi-scale spatial database.
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 basic spatial database is the core of the digital City, and the quality of spatial data is the key factor in database construction.
距离连接在空间数据库中有着广泛的应用，而距离连接的选择度估计是优化距离查询的基础。
Distance join is widely used in spatial database. Selectivity estimation for distance join is the basis of optimizing the query of the distance.
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