On classification of XML document transformations

As XML has become a very popular standard for data in many fields, the domain of XML documents transformations is becoming more and more important. In this paper we propose classification hierarchy for XML document transformations. We assign implemented transformation systems into defined groups according to the type of possible transformations. This enables user to choose appropriate transformation system according to the requirements for transformation. Secondly, we are concerned with the group of transformation systems, which enable type transformation. We define underlying formal models in common framework and discuss their applicability for these transformations.