Managing XML Data with Evolving Schema
B. V. N. Prashant, Pankaj Kumar · Conference on Management of Data · 2006
XML databases evolve during their lifetime to address new requirements and reect changes in the real world. The structure of XML data dened by either DTD or XML schema, undergoes changes to accommodate changing user needs. In this paper, we focus on the problem of DTD change operations which will help users to perform necessary changes to the schema. We propose a set of three high-level operators as an extension to existing set of primitive DTD change operators [3]. These operators are supported by algorithms to generate XSLT scripts which transform instances of current DTD to conform with the changed DTD.