摘要
当代信息资源的主要特点是数字化、网络化、异质异构、难以规范。如何利用网络、组织、管理、共享信息资源并提供检索和查询,成为电子政务等信息系统建设关注的焦点。针对信息共享和信息检索,需要元数据对信息作进一步的描述和用Z39.50标准建立新一代的检索机制。本文对元数据(metadata)和Z39.50信息检索标准进行了分析,并介绍了一种元数据信息之间关系的层次框架。
The main specialties of contemporary information resource are digitizing, networking, heterogeneous and being difficult to gauge. How to make use of network to organize, management, share resource and offer search and query have become focuses in building information system for electronic governmental affairs. For the sake of sharing and retrieving information, we need metadata for farther description of the information and Z39.50 for setting up a new retrieval system. This article analyzes metadata and Z39.50 protocol, and introduces a kind of delaminating framework between metadata.
出处
《无锡南洋职业技术学院论丛》
2007年第3期28-31,共4页
Journal of Wuxi South Ocean College
关键词
综合信息资源库
39.50协议
标准元数据
共识元数据
自定义元数据
synthetically information resource database
Z39.50 protocol
standard metadata
fellow-felling metadata
user-defined metadata
