Analysis on spatial data storage by use of oracle spatial object model in gis 對象模型進行空間數據存儲的分析
The models and methods presented in the paper are useful for the development of webgis applications , which combines oracle spatial and gml 為集成oraclespatial與gml的應用進行了有益的嘗試。
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空間數據庫理論,對其空間數據的存儲、索引機制和空間分析作了介紹。
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 重點解決了多層分布式計算模式下的webgis系統的開發、 gml應用schema的定義、 oraclespatial與gml的數據格式轉換、 gml文檔的解析與空間數據的顯示等問題。
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軟件mapguide6 . 0和asp及vbscript開發了一個webgis應用系統,在客戶端完善了gis的功能,并著重分析了webgis在客戶端如何實現數據更新,完成一個比較成功的webgis系統。
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 本課題根據對空間數據庫和相關技術的研究,選用了oraclespatial和mapx為開發平臺,以重慶高速公路綜合管理系統的開發為背景,深入研究了oracle9i空間數據庫技術,透徹分析其理論,研究了mapinfo公司的mapx4 . 5的技術細節,重點是其對空間數據庫支持方面的技術細節和gis應用系統開發的總體模式,主要是在空間數據庫平臺下客戶和服務器端的連接模式。
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 本文首先介紹國內外有關svg的研究成果,并且提出將其與oracle數據庫的空間數據管理組件? ? oraclespatial相結合,應用于webgis 。接著,介紹了本文核心技術? ? oraclespatial的sdo _ geometry類型與svg相互轉換的具體實現過程,給出了轉換的算法執行效率分析以及實驗測試結果。
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 針對gis系統數據管理及數據交互操作問題,采用了符合opengis建議的擴展了的對象關系數據庫, oraclespatial ,作為webgis的數據庫,用來存儲gis系統的空間數據和屬性數據,實現數據的一體化管理,對gis系統之間的數據交互給出一個可行的解決方案。
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等格式文件和數據庫之間的空間數據轉換系統;采用autodesk公司mapguide6 . 0和jsp開發了一個webgis應用系統;采用純java方式,離開一般的gis平臺,采用oracle公司提供的接口,開發基于java虛擬機的簡單gis系統,實現了簡單gis系統部分功能,如放大,縮小,坐標轉換等。
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 本文分析和比較了目前webgis所采用的分布式計算模式、空間數據存儲管理技術、數據的網絡傳輸技術以及webgis的各種實現技術的不足,結合當前gis技術和數據庫技術的發展,提出了采用空間數據庫實現對空間數據和屬性數據的統一存儲和管理、采用gml作為空間數據的網絡傳輸格式的一種webgis解決方案,并在此基礎上使用java實現了一個基于oraclespatial和gml的webgis實驗系統。