摘要
随着数字图书馆的发展,各种资源间的互操作性也变得越来越重要,人们也一直致力于对分布式资源进行统一检索的开发。要实现这一目标,归纳起来有三种方式:代理模式,即通过检索代理对不同的目标源分别检索,然后对检索结果统一处理;联邦检索模式,即各个目标源严格遵守统一标准或协议从而实现底层的跨库检索;采集模式,即通过元数据采集协议将分布的元数据集中提供检索。本文对这三种模式进行了对比介绍,并对国际上应用越来越广泛的 OAI 元数据互操作机制及应用进行了详细介绍和讨论。
The interoperability of digital libraries is becoming more and more important with the de- velopment of digital resources.Generally,three types are categorized for current DL interoperability: Gathering,Federated and Harvesting.Each type has its advantages and disadvantages.Gathering trans- lates the user query into acceptable queries for each DL and merges the hits into one page that is present- ed to the user.In harvesting approach,a service provider harvests metadata from data providers using a predefined protocol.Federated type needs all participants use the same DL protocol such as Z39.50. These approaches are compared briefly and particularly federated approach using OAI protocol is dis- cussed.
出处
《图书馆杂志》
CSSCI
北大核心
2004年第1期55-58,共4页
Library Journal
