XPERANTO : Br idging Relational Technology and XML

XML has emerged as the standard data-exchange format for Internet-based business applications. These applications introduce a new set of data management requirements involving XML. However, for the foreseeable future, a significant amount of business data will continue to be stored in relational database systems. Thus, a bridge is needed to satisfy the requirements of these new XML-based applications while still leveraging relational database technology. This paper describes the design and implementation of the XPERANTO middleware system, which we believe achieves this goal. In particular, XPERANTO provides a general framework to create and query XML views of existing relational data.