This paper specifies the advantags of NXD database over RDBMS in storing and using DC metadata.It also puts foward a prototype system which store and use DC metadata based on a NXD database.

• 分析使用NXD数据库对比传统关系型数据库进行存储优势,提出用NXD数据库对DC元数据存储,并设计一个原型系统实现DC元数据的存储和利用。