【摘要】 在开发城市防震减灾系统的过程中,以ArcIMS为开发平台,构建出基于GML的三层B/S结构的防震减灾WebGIS体系,支撑和协同相关部门间的工作。在客户端,采用Java Applet编程实现对矢量图形的操作。在数据库层,以GML为空间数据描述语言,设计出基于GML的城市空间信息模型,并利用Oracle 9i的空间数据部件存储和管理各种类型的空间数据,实现多源异构空间数据的共享。更多还原

【Abstract】 In the procedure of developing earthquake disaster reduction system,the GML based three-layer B/S architecture of the earthquake disaster reduction WebGIS was built by using ArcIMS as the development platform.In the client,the vector graph was browsed through Java applet program.In the database layer,the spatial data was represented by using GML(Geography Markup Language),and the city spatial data model was designed based on GML.The spatial data was stored and managed by using Oracle spatial.It was easy to share the heterogeneous data.更多还原