Because the Internet has become the infrastructure of e commerce, more and more data sources are distributed over the Internet. How to effectively integrate the data has become a hot research topic. This paper discusses fundamental methods: global as view and local as view. Then we build hierarchical global schema repositories to effectively integrate all heterogenous data sources to form an integrated system for Internet-based e-commerce. A three-tier architecture has been proposed to organise the global schema repositories. Finally we discuss how to use XML to build these repositories.
Proceedings of the 3rd International Association of Science and Technology for Development (IASTED) International Conference on Wireless and Optical Communications, Banff, Alberta, Canada, 14-16 July 2003,