摘要
分析了数字图书馆资源整合由浅入深的3个层次:表现层、应用层和元数据层。表现层整合是指信息源的有序排列聚合,应用层整合是建造一个屏蔽各数据库异构的中间访问层;元数据层整合是把异构数据库在事实或者形式上转变成同构数据库。
This paper has analyzed the digital library resources integration at three levels： presentation layer, application layer and metadata layer. The presentation layer integration is the source of that information orderly polymerization. The application layer integration is the construction of a middle shield for the heterogeneous databases. The metadata layer integration is to turn the heterogeneous database into the same database structure in the form or in fact.
出处
《农业图书情报学刊》
2008年第8期28-30,35,共4页
Journal of Library and Information Sciences in Agriculture
关键词
信息资源整合
数字图书馆
三层次整合
information resource integration
digital library
three levels integration
