虚拟天文台数据访问服务(VO—DAS)基于新兴的数据网格技术,实现异地异构海量天文数据统一联合资源的访问。这些服务对外提供简单、直观的访问操作接口。立足VO—DAS的接口服务,我们设计了一套客户端系统,即VO—DAS的GUI客户端和命令行客户端。数据用户可以通过客户端实现对VO—DAS接口的调用,从而访问分布存储的异构天文数据资源。
Virtual Observatory Data Access Service ( VO - DAS), based on the emerging technology of data grid, achieved its goal of accessing distributed and heterogeneous data resources through a uniformed way by exposing simple, practical and standardized interfaces to its clients. We designed a client system for the system , including GUI and COMMAND LINE . Users can easily access heterogeneous astronomy data through these client interfaces. This paper focuses on the design and implementation of the VO - DAS client system.