Analysis on spatial data storage by use of oracle spatial object model in gis 对象模型进行空间数据存储的分析
The models and methods presented in the paper are useful for the development of webgis applications , which combines oracle spatial and gml 为集成oraclespatial与gml的应用进行了有益的尝试。
We research the theory of oracle spatial database , introduce storage of spatial data , mechanism of index and spatial analyze in oracle 深入研究了oracle空间数据库理论,对其空间数据的存储、索引机制和空间分析作了介绍。
In this article we lay special stress on the settlement of several problems such as the development method of webgis according to the multi - layer distributed computational model , the data transformation between oracle spatial and gml , and the method of parsing and presenting geographic data in gml format 重点解决了多层分布式计算模式下的webgis系统的开发、 gml应用schema的定义、 oraclespatial与gml的数据格式转换、 gml文档的解析与空间数据的显示等问题。
Based on oracle spatial , the paper uses autodesk ' s webgis software , mapguide6 . 0 、 asp and vbscript to develop a webgis system to improve the webgis ' function of client ' s terminal . especially , this paper analyses how to update the data on the client ' s terminal of gis 采用autodesk公司的webgis软件mapguide6 . 0和asp及vbscript开发了一个webgis应用系统,在客户端完善了gis的功能,并着重分析了webgis在客户端如何实现数据更新,完成一个比较成功的webgis系统。
Based on study of spatial database and related technology , on the platform of oracle spatial plus mapx of maplnfo , and against the background of developing chongqing expressway comprehensive management system , this thesis elaborates on the making of electronic map and its loading to database , the storing model of spatial data as well as the adding , amending , deleting , selecting , and inquiring of spatial objects . it also lists the basic approaches to develop gis project based on such a spatial data storing model at length 本课题根据对空间数据库和相关技术的研究,选用了oraclespatial和mapx为开发平台,以重庆高速公路综合管理系统的开发为背景,深入研究了oracle9i空间数据库技术,透彻分析其理论,研究了mapinfo公司的mapx4 . 5的技术细节,重点是其对空间数据库支持方面的技术细节和gis应用系统开发的总体模式,主要是在空间数据库平台下客户和服务器端的连接模式。
This paper introduces research results at home and abroad firstly . then it proposes a new development direction of webgis , which is based on svg and oracle spatial . then it brings forward the core technology of the paper ? ? the realization process of the svg and sdo _ geometry mutual conversion , gives the analysis of arithmetic execution efficency arithmetic and the result of experiment test . then it gives web application model on the conversion technology 本文首先介绍国内外有关svg的研究成果,并且提出将其与oracle数据库的空间数据管理组件? ? oraclespatial相结合,应用于webgis 。接着,介绍了本文核心技术? ? oraclespatial的sdo _ geometry类型与svg相互转换的具体实现过程,给出了转换的算法执行效率分析以及实验测试结果。
Furthermore , this paper adopts object related database system in accordance with opengis , oracle spatial , as the database of the webgis to settle the problems of interaction and management of gis data . this database can be used to store both spatial and attribute data of gis to realize the integrative management of data 针对gis系统数据管理及数据交互操作问题,采用了符合opengis建议的扩展了的对象关系数据库, oraclespatial ,作为webgis的数据库,用来存储gis系统的空间数据和属性数据,实现数据的一体化管理,对gis系统之间的数据交互给出一个可行的解决方案。
It also enables transform the format of geo - data file from . shp file to wkt file and xml file each other , the paper uses autodesk ' s webgis software , mapguide6 . 0 、 jsp and java bean to develop a webgis system . in the last part , adopting java program language and making use of the interface supported by oracle spatial , this article develops a simple gis system to test the geo - data share and transform system functions , such as zooming , panning and spatial reference system Shp格式文件、 xml等格式文件和数据库之间的空间数据转换系统;采用autodesk公司mapguide6 . 0和jsp开发了一个webgis应用系统;采用纯java方式,离开一般的gis平台,采用oracle公司提供的接口,开发基于java虚拟机的简单gis系统,实现了简单gis系统部分功能,如放大,缩小,坐标转换等。
In this article , we compare and analyze the model of distributed computation , the technologies of storage and management of spatial data , the technologies of geographic data transmission in internet , and the methods of developing webgis . combined with the developments of gis and database , a webgis solution is presented , which uses spatial database to manage spatial data and non - spatial attribute data , and uses gml as the transmission format of geographic data in internet . at last , we use java to develop an experimental webgis system , which is based on oracle spatial and gml 本文分析和比较了目前webgis所采用的分布式计算模式、空间数据存储管理技术、数据的网络传输技术以及webgis的各种实现技术的不足,结合当前gis技术和数据库技术的发展,提出了采用空间数据库实现对空间数据和属性数据的统一存储和管理、采用gml作为空间数据的网络传输格式的一种webgis解决方案,并在此基础上使用java实现了一个基于oraclespatial和gml的webgis实验系统。