Design metadata framework for mapping data and expression based on RDF/XML
FU Lihong, ZHOU Huiqun, XU Shijin, LU xiancai, DONG Shaochun (Department of Earth Science, Nanjing University, Nanjing Jiangsu 210093, China)
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.