It is applicable to the renewal of other geographic spatial databases of corresponding scale.
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。
Spatial association rule discovery in spatial databases is a very important data mining task.
空间关联规则挖掘是在空间数据库中进行知识发现的一类重要问题。
That is to say, for very large spatial databases, QR-tree processes more superiority than R-tree.
也就是说，对于大型空间数据库索引来说，QR -树与R -树相比整体性能上具有较明显的优势。
In this article we have shown several important techniques to improve performance of spatial databases.
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。
Finally, it is pointed out that the high dimensional index is a hot research field in spatial databases.
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。
For data sets indexed by R-trees in spatial databases, three algorithms are presented for answering this kind of query.
在空间数据库中，对采用r树类型索引存储的数据集给出了三个查询处理算法。
Then, the principles, types and methods of data partition are given in the context of the distributed spatial databases.
给出分布式空间数据库的空间数据划分原则、分布式空间数据分段的类型和空间数据关系的分段操作方法。
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和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.
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。
By introducing a new grid-based data compression framework, conducted the study on the clustering algorithm SGRIDS which dealed with a large spatial databases.
引入了一种新的基于网格的数据压缩方法，并应用该方法对处理大型空间数据集的聚类算法SGR IDS进行研究。
Faced with the large mounts of increasing spatial data, a terminal user has more difficulty in understanding them without the helpful knowledge from spatial databases.
面对持续增长的海量空间数据，用户难以在没有知识辅助的情况下完全理解数据。
Spatial databases are being applied widely in many applications such as GIS, CAD, Robot, Computation, Geometry, Computer Vision, Physic Image and Multimedia System etc.
空间数据库已广泛地应用于GIS,CAD、机器人、计算几何、计算机视觉、医学图像和多媒体系统等领域。
The existing geospatial databases are mainly use relational database to store and manage spatial information, and it is orderly spatial data set with the same characteristics.
现有的基础地理空间数据库大都利用关系数据库来存储和管理空间地理信息，是具有相同特征的空间数据的有序集合。
The construction of the geological map spatial databases has great significance for the fast renewing of basic geological maps, sharing of information resources and study of basic geoscience.
地质图空间数据库的建立对于基础地质图件的快速更新、信息资源共享以及基础地质科学研究具有重要意义。
The spatial dependence in data mining is normally represented by spatial association rules, which provide the critical information in assessing spatial correlations in large spatial databases.
空间数据挖掘中所依赖的空间相关性是由空间关联规则描述的。
Now that you have an idea what can be achieved easily by combining SVG and spatial data in DB2 databases, the subsequent sections explain, in more detail, how I implemented the Web application.
现在，您知道了通过将svg与db2数据库中的空间数据相结合可以轻易地做到哪些事情，随后的小节将更详细地解释如何实现这个Web应用程序。
Results GIS databases were established and local digital basic map, resident GPS point map, disease spatial distribution map and cluster spatial map were obtained.
结果建立了地理信息分析系统，研究获得基础数字地图、GPS居民点分布图、疾病分布图、组群分布图。
It makes use of the technique of overall databases, which can entirely record the spatial 3d state of the underground pipeline network.
在国内率先采用全数据库技术，可完整记录地下管网的空间三维状态。
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 introduces Spatial Integrated System of National Water Resources General Databases.
本文介绍了全国水资源综合数据库空间集成应用系统。
This paper introduces Spatial Integrated System of National Water Resources General Databases.
本文介绍了全国水资源综合数据库空间集成应用系统。
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