DASA:一种用户主导的可视化数据服务聚合方法

An User-guided and Visualized Data Service Aggregation Approach

随着网络技术的高速发展,互联网已经成为重要的跨域数据协作和共享平台.在开放互联网环境下,对数据集成系统能够适应动态变化的业务需求、实现按需集成的要求日益增加.数据源的异构性和用户友好的集成环境和方法是急需解决的问题.本文提出了一种由最终用户主导的互联网上跨域数据源即时聚合的方法DASA.该方法借鉴"服务"的思想,将多类数据源封装为数据服务,具有统一的数据模式和访问方式,并将其作为数据视图构建的基本元素;同时,将数据服务与一个易于用户操控的呈现界面关联起来,通过提供可视化的集成环境和界面级的聚合操作实现数据集成.本文亦对文中方法进行了案例分析,并探讨了原型系统的实现.

Today,more and more enterprises and organizations depend on the Internet to realize business collaborations. In an open environment like the Internet, there is a strong demand for data integration systems to adapt themselves to changing business requirements and on-demand integra- tion. Key issues behind are how to handle data heterogeneities and provide a user-friendly integra- tion environment. An end-user-guided data aggregation approach, called DASA, is proposed in this work. Based on the concept of ＂service＂, diverse data sources can be encapsulated as data services, which provide a uniform data model and accessing pattern. The data services are also regarded as the fundamental elements for data aggregation. Meanwhile, a data service is coupled with a visual interface, together with a group of easy-to-manipulate aggregation operators, so that users can be facilitated to finish their integration tasks. Finally, a case study to demonstrate DASA is given, and the implementation of the prototype is discussed.