【摘要】 论述元数据技术在测绘信息共享和管理中的重要作用,分析当前测绘元数据库建设的现状,指出研究测绘元数据表达的重要意义。根据测绘数据的组织结构特点,设计测绘元数据框架,提出利用RDF/XML技术表达测绘元数据的思想。最后总结利用RDF表达测绘元数据的优点。更多还原

【Abstract】 The importance of metadata in mapping data sharing and management is discussed. Current situation on metadata research of mapping data is analyzed. The importance of investigating metadata expression for mapping data is pointed out. Study is made on how to design a metadata framework according to the character of mapping data structure. The metadata expression idea is presented based on resource description framework (RDF), and the application language of extensible mark-up language (XML). At the end, the main virtues of metadata expression for mapping data based on RDF are showed.更多还原