Design and Realize the Net Management System for Geospatial Metadata Based on Object-Oriented Metadata Base

Framework of geospatial metadata is discussed,and shortcomings of existing organization and management modes of metadata are analyzed.Objecthypostases of geospatial metadata are anatomized.Geospatial metadata is understood and de- scribed with the object-oriented idea,and its organization and management mode based on the object-oriented method is presen- ted.It overcomes shortcomings of existing modes.The metadata management system for geospatial information of water re- sources is designed and realized based on three-tier B/S with functions of display,input,query and editing.It greatly improves the efficiency in using and managing metadata.