Integrating and Accessing of Heterogeneous Data Sources
Xiong Hai · 2003
As the Web comes to be viewed as a large semistructured database with XML as its model, issues related to querying semistructured data in general, and XML in particular, become more important. In this paper, based on the MIX and W4F,a system of integrating and accessing heterogeneous data sources is presented. The system accesses a set of XML sources, which are currently information systems wrapped to provide (1) an XML view of their data and (2) a set of XMAS queries that they can answer. Conceptually, it exports an integrated view of the source data. The view definition, provided by the view developer, specifies how the source data will be integrated. Especially, the wrapper for Web data sources is generated by the W4F and the system does not materialize the integrated view in ad.