数字图书馆的数字对象体系结构

The Infrastructure of Digital Objects in Digital Library

介绍了数字图书馆的数字对象体系结构 ,它提供对分布式数字对象的持久保存、安全访问、管理以及索引服务 ,它的组成部分有 :名录服务系统、仓储服务系统、索引服务系统和用户接口网关 .名录服务系统在整个Internet范围内为用户提供安全的名录解析和分布式的句柄管理服务 .仓储服务系统的基本存储单元是数字对象 ,整个系统就是为了如何存储、访问、管理数字对象而设计的 .索引服务系统进行资源发现 ,从而使用户能够很容易地从馆藏中寻找和发现所需的对象 (内容 ) .用户接口网关提供以人为中心的数字图书馆功能入口点 .

This document presents an infrastructure of digital objects in digital library, which provides persistent storage, secure access, management and index service to the distributed digital objects. This infrastructure is composed of name service, repository service, index service and user interface gateway. The name service is responsible for the secure name resolution and distributed handle management in the Internet. The repository service provides the mechanism for the deposit, storage,and access to digital objects in the form of which information is stored in the repository. The index service provides the mechanism for discovery of digital objects, so that user can easily find and discover objects in the collection. A user interface gateway provides a human centered entry point to the functionality of digital library. \ \