MIXm is a fully XML-based mediator prototype whose graphical user interface BBQ blends browsing and querying of XML data. Powerful grouping and ordering operators are supported by means of novel collection list construct. BBQ automatically generates XML queries from the graphical query specification given by the user. The system solely relies on the XMAS query language for extracting XML data (both from the mediator and from the sources). An algorithm for DTD inference for certain views has been developed. In the demonstration, the system is not only presented from the end user's (BBQ) perspective, but also details of the generated XMAS queries and algebra expressions can be shown.
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