XQuery & OLAP

Online Analytical Processing on XML became a topic in the database research community, which is mostly due to the possibilities of XML to overcome the constraints of the relational multidimensional model. This pager gives an overview of changes and challenges in terms of storing multidimensional heterogeneous data in XML and how to query it. We use BaseX, a native XML database developed at the chair for Database and Information Systems (U Konstanz) as a back-end to store and query the data