野外观测站元数据查询系统的设计与应用

Design on the Metadata Querying System of National Key Field Observing System and Its Application

元数据是解决数据共享问题的技术手段之一。元数据和数据集中间存在一一对应的关系。通过实现数据导航的功能,对数据集进行访问、管理、查询、分析。目前在国家主要的科研领域,建有很多的野外观测站。为了更好地组织和利用这些数据,建立国家野外观测站元数据标准。在此基础上,并建立元数据网上查询系统,提供对元数据的管理、查询、检索和发布等功能,实现科学数据的共享、组织、管理,使野外观测数据在科学研究中得到更好应用。

The metadata is used as one of the means to solve the problems on data sharing. There is a corresponding relationship between metadata and dataset. We can visit, manage, query and analyze the dataset and even accomplish data mining through realizing data navigational functions. A great number of field observation stations have been set up in the major national scientific research fields, which provide plenty of detailed and real-time data. In order to make better use of all the data sources, it is urgent to set up the criterion on the metadata of national field observational stations. On the basis of this, the metadata querying system of national key observational stations is set up, aiming at the metadata managing, querying, searching, and issuing. Only by doing so, it is possibile to realize data sharing organizing and managing and make best use of the field observed data in the scientific research.