第 28卷 增 刊
2002年 8月
大 连 海 事 大 学 学 报
Journal of Dalian M aritime University
Vo1.28,Supp1.
Aug.,2002
文章 编号 :1006.7736{2002)增.0083.04
构建基 于 B/S面 向对象 的 电子海 图数据 库
李广儒 ,孙 少鹏 ,赵德 鹏
(大连海 事大学 航 海 技术研 究所 ,辽宁 大连 116026)
摘 要 :研究了基于Int m t电子海图的系统结构,并主要讨论了如何构建面向对象的海图数据库,如何从海
图数据 库 中搜 索 出有 用 的空 间数 据 。
关 键 词 :电子海图;数据库;空间搜索
中图分 类 号 :U612.26 文献标 识码 :A
Building of B/S—based obj ect oriented electronic chart database
LI Guang—ru,SUN Shao—peng,ZHAO De—peng
(Nautical Science& Techno1.Inst.,Dalian Maritime Univ.,Dalian 116026,China)
Abstract.This paper researches on system architecture of Internet—based Electronic Chart,and mainly dis—
cusses how tO establish object—oriented chart database,how tO search useful spatial data from chart data—
base.
Key words:electronic chart;database;spatial searching
1 IntrOductiOn
W ith the development of Internet, attracts
how tO realize Electronic Chart application through
INTERNET attracts more attention than before.
The rapid development of satellite com munications
provides unheard of chance to the development of
communications between land and ship.Therefore,
building I IS Electronic Chart Server and the related
technologies becomes pop technology in research on
Electronic Chart. W eb—Chart iS the Electronic
Chart that based on Browser/Server structure,and
W eb—Chart realizes the rapid display of vector
graph and the seam less connection of dynamic da—
ta.Browsers download this system from serv er into
client through INTERNET , and load graphic da—
ta,build database 1ink.W hen user uses data and
graph,it produces dynamic SQL language,and ac—
cess database serv er through INTERNET , then
user can operate vector graph and dynamic data.
Database Serv er’S realization iS based on file
system and Database M anagement System
(DBMS).It can satisfy the request of accessing
database, especially accessing the structure data.
Application Serv er iS commonly a serv er who can
provide universaI or professionaI function based on
all sorts of application models or computing techn—
ology in professional field… . It was built based on
* 收 稿 日期 :2002.07.10.
作者筒介 :李广儒 (1969.),男 ,黑龙江 齐齐哈 尔人 ,讲 师 ,主要从 事海 上交通信 息系统 的研究
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