摘要: Today, the Internet can be seen as a global market place populated by a huge number of providers and consumers that exchange data from a wide range of domains. The upcoming flood of data inside the World Wide Web forces the introd... 展开 Today, the Internet can be seen as a global market place populated by a huge number of providers and consumers that exchange data from a wide range of domains. The upcoming flood of data inside the World Wide Web forces the introduction of new technologies that can reduce this information overload. Data querying is a routine practice for many on-line services. Informative query answering may improve on-line shopping service by incorporating data integration techniques. In this paper, we propose an approach for informative query answering using Resource Description Framework Query Language (RDQL) and Resource Description Framework (RDF). The RDF is used to represent all instance information. RDQL queries RDF documents using SQL-alike syntax. And the mediator/wrapper approach is used for integrating heterogeneous data. 收起