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- We should set up spatial databases that have a direct relationship to the physical world. 我们应该建立与物质世界有直接关系的空间数据库。
- Recent studies have extended the scope of data mining from relational and transactional databases to spatial databases. 近来 ;数据采掘的研究已从关系型和事务型数据库扩展到空间数据库 .
- Recent studies have extended the scope of data mining from relational and transactional databases to spatial databases . 数据挖掘的研究已从关系型和事务型数据库扩展到了空间数据库。
- This composition table provides a basis for reasoning about indeterminacy in spatial data and makes a preliminary theoretic attempt for the emergence of spatial databases and GISs capable of coping with indeterminacy. 关系复合表的建立为空间数据不确定性处理建立了推理基础;并为建立能处理不确定性的空间数据库和地理信息系统做了理论准备.
- How to use spatial databases to manage and analyze the geological data is undoubtedly an important means of technology in the sequence stratigraphy and lithofacies palaeogeography study. 如何将海量数据用空间数据库管理并加以分析，无疑是层序地层与岩相古地理研究中的重要技术手段。
- This article introduced key technologies of spatial databases design, analysis and application to study and draw a lithofacies palaeogeography map of a third sequence based on the Ordos Basin. 以鄂尔多斯盆地中一个层序的岩相古地理图的分析、绘制为例，介绍了空间数据库的设计、分析、应用等关键技术。
- Selectivity Estimation is the base of spatial database query optimizer. 选择性估计是设计空间数据库查询优化器的基础。
- 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. 摘要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。
- Spatial Data Mining Based on Spatial Databases 基于空间数据库的数据挖掘技术
- multilevel and heterogeneous spatial Databases 多级异构空间数据库
- Jing Ning, born in 1963.Professor and Ph.D. Supervisor.His main research interests include GIS and spatial database. 景宁,1963年生,教授,博士生导师,主要研究方向为地理信息系统、空间数据库。
- Spatial database for railway is the foundation of Railway Geographic Information System (RGIS). 摘要铁路空间数据库是铁路地理信息系统(RGIS)的基础。
- 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。
- SDM is different from the classical data mining in that spatial database have its own characters compared with relational database (RDB). 空间数据有许多不同于非空间数据的特性，使得空间数据挖掘与一般数据挖掘相比亦有其鲜明的特征。
- 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。
- The data storage is based on RDS, design spatial database under the direction of object oriented concept and realize object storage. 数据的存储是以现有的关系数据库为基础,以面向对象的思想为指导来设计空间数据库,实现对象的存储。
- However there are some problem in the content and system of spatial database course and the standard teaching mode has not been formed. 但由于种种原因，空间数据库课程在课程体系、课程内容、教学模式等方面仍然存在许多问题和不足。
- ArcGIS extends ArcView by providing multi-userediting, advanced analysis, Internet services, and highperformance spatial database services. 在 ArcView 中，无论用view，table，chart，layout或script哪一种方式来对数据进行检索、查询、统计分析或生成图，都是通过对专题(theme)，特征(feature，又作要素)，属性(attribute)，字段(field)进行操作来实现。
- With the penetration of geographical information system in people's lives,NL-oriented spatial database query has been noticed. 随着地理信息系统深入应用于人们的日常生活,面向自然语言的空间数据库查询的研究越来越被人们重视。
- To query the spatial database effectively, this paper constructs a new spatial index structure (MC tree) and also presents the properties and updating-arithmetics of the MC tree . 根据空间数据库的查询要求,本文构建了一种新的空间索引结构(MC树),并给出了MC树的性质和相关更新算法。
