| 基于元数据的信息共享机制研究 |
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| 引用本文： | 辜寄蓉,苗放,王成善.基于元数据的信息共享机制研究[J].物探化探计算技术,2006,28(1):75-79. |
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| 作者姓名： | 辜寄蓉 苗放 王成善 |
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| 作者单位： | 1. 四川师范大学资源环境学院,成都,610066
2. 成都理工大学,成都,610059 |
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| 摘 要： | 元数据作为关于数据的数据,是目前信息共享的关键技术,也是当前研究的热点。在对比国际、国内元数据标准的基础上,采用元数据管理的三个层次:元数据子集、元数据实体和元数据元素,建立了“数字成都”元数据标准模板。它主要包括:标识信息、数据质量信息、空间参考信息、数据集的内容信息、分发信息、元数据参考信息。讨论了“数字成都”中基于元数据信息共享系统的结构、模块和特点,实现了分布式数据组织与管理、分布式数据共享、分布式数据快速索引机制以及跨平台数据访问。
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| 关 键 词： | 元数据 信息共享 “数字成都” |
| 文章编号： | 1001-1749(2006)01-0075-05 |
| 收稿时间： | 11 2 2004 12:00AM |
| 修稿时间： | 2004年11月2日 |
Research of metadata information sharing system |
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| GU Ji-rong,MIAO Fang,WANG Cheng-shan.Research of metadata information sharing system[J].Computing Techniques For Geophysical and Geochemical Exploration,2006,28(1):75-79. |
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| Authors: | GU Ji-rong MIAO Fang WANG Cheng-shan |
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| Abstract: | Metadata is simply called "data about data" and is the key technology of information sharing.It is also the hotspot in information sharing technology.In this paper,based upon the contrast of the national and international metadata standards,we adopt three levels of metadata management: Metadata Section, Metadata Entity and Metadata Element.We establish the metadata standard template,including Identification Information,Data Quality Information,Spatial Reference Information,Content Information,Distribution Information and Metadata Reference Information.We also build the Metadata Information sharing system of Digital Chengdu.The core is metadata management system of the metadata information sharing system and the base is to establish the metadata standard of the metadata management.We set up different metadata warehouse of different metadata management system.Then we define the metadata views to carry out the interface between other information sharing system and users.The metadata information sharing system has four characteristics.: distributed data organizing and management,distributed data sharing,distributed fast data index and data accessing between multi-operating system. |
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| Keywords: | metadata information sharing digital Chengdu |
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