Data integration based WWW with XML and CORBA

At the present time, WWW is becoming important and potential resources for delivering and sharing information over the world, and more and more Web applications require querying and integrating the data from multiple, distributed, heterogeneous sources. Web data integration is a challenging research project. In this paper, we propose the architecture of Web data integration with XML and CORBA, which is based on our developing project, Panorama. The architecture can integrate the data from multiple data sources, including relational database, object-oriented database, HTML and XML documents, and structured text files. In the architecture, we view Web as a huge database, and take CORBA as object model and XML as mediated data model, and use XML-QL to accomplish data query and integration on the Web. We also elaborate and analyze some implementing methods, such as integrator and wrappers corresponding to various data sources.