The core of GIS is Spatial database.
GIS的核心是空间数据库。
Spatial database is the core of GIS.
空间数据库是地理信息系统的核心。
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。
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。
Spatial Database is one of the important part in national spatial infrastructure.
空间数据库是国家基础设施的重要组成部分。
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。
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。
It is refer to normalization of data in building of spatial database of soil and water loss assessing.
在水土流失评价数据库的建立研究中，涉及到数据的标准化问题。
We also set up the spatial database in order to make geographic information coordinate with tax indexes.
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。
Layer based spatial database model is widely used now, which consequently causes some difficult problems.
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。
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。
This paper, which based on GIS, finished the application study of Spatial Database in Colliery Monitoring System.
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。
Landslide spatial database mainly includes landslide factor database and landslide spatial distribution 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。
Make sure Chinese mire wetland metadata expresses form, create the metadatabase of the mire wetland spatial database.
确定中国沼泽湿地元数据表达形式，建立沼泽湿地空间数据库的元数据库。
Query operation in spatial database require some special support at the physical level as well as in conventional database.
空间数据库与传统数据库一样，在其物理层上要求有一些专门结构来支持搜索操作。
The function design of system includes writing down amendment and pretreatment about spatial database and attribute database.
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；
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。
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。
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。
It can handle spatial data and spot any-shape clusters in a noised spatial database by dividing them into clusters with high enough density.
该算法将具有足够高密度的区域划分为簇，并可以在带有“噪声”的空间数据库中发现任意形状的聚类。
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。
This paper classify a series of methods on spatial database index, and introduce the QR-tree index structure with very large spatial database.
在综述现有空间数据库索引技术的基础上，提出了一种面向大型空间数据库的QR-树索引方法。
Distance join is widely used in spatial database. Selectivity estimation for distance join is the basis of optimizing the query of the distance.
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。
System database design mainly solves the establishment of spatial database and property database as well as the connection relations between them.
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。
In addition, this technology helps the maintenance and management of the system spatial database, and keeps the system space attribute data current.
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。
Research and design the organization of multi-representation spatial database, adaptive visualization of spatial data, and realize a prototype system.
研究并设计多重表达空间数据库的组织方式和空间数据的自适应可视化，并实现一个原型系统。
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