摘要
作为ISO确立的新标准,主题地图用来描述知识结构及其内在关联。它提供了语义级的数据导航和组织方式,是一个表达和交换结构化信息的元数据模型。文中在介绍了主题地图的相关概念后,设计了一种基于主题地图、扩展关系数据库的方法,并利用主题地图的描述语言XTM导出数据库,为多个关系数据库之间的数据交换提供了新的理念。
Topic maps are a new ISO standard for describing knowledge structures and associating them with information resources. As a data model of describing and exchanging information, they provide a way of navigating and organizing semantic data. In the paper, describe the related concept of topic maps at first. Then a method of how to extend relational database using topic maps is suggested. At last, using XTM educe database that is the description language of topic maps in order to provide the new idea for exchanging data in multidatabase.
出处
《计算机技术与发展》
2006年第2期87-89,178,共4页
Computer Technology and Development
