介绍Web整合中的关键技术——资源描述技术的内涵。在总结现有的基于STARTS协议、基于提问取样技术和调焦提问探测技术三种资源描述技术的基础上,分析每种技术的原理、算法、特点等,在此基础上对目前Web整合中的资源描述技术进行简要评价。 Describe the key technology in Web integration - the connotation of resource description technology. After summarizing the three resource description technologies based on STARTS protocol, question-based sampling technology and focusing query technology, this paper analyzes the principle, algorithm and features of each technology. Based on this, Resource description technology for a brief evaluation.