Heterogeneous Data Translation through XML Conversion

In this paper, we illustrate an approach to the translation of Web data between heterogeneous formats. This work fits into a larger project whose aim is the development of a tool for the management of data described according to a large variety of models and formats used on the Web and the automatic translation of schemes and instances from one model to another. Data translations operate over XML representations of schemes and instances and rely on a uniform description of models that we call metamodel. The metamodel shows structural diversities and dictates the needed transformations. Complex translations are derived automatically by combining a number of predefined basic procedures. These procedures perform XML transformations and are implemented by means of XML query languages. Practical examples are provided to show the effectiveness of the approach.