In addition to the information retrieval functions, abstract and index databases also have value-adding functions, which are reflected in the correlation and integration of resources.

• 文摘索引数据库除具有基本的信息检索功能,还具有增值功能。 数据库在内容的增值上表现为资源的联系与整合,包括基于多种类型数据库的集成,基于全文获取的资源链接以及基于网络资源整合;