The graphical BBQ (Blended Browsing and Querying)
user interface, developed by the DB-Lab@UCSD, allows to define complex XML
queries in an elegant and intuitive way, based on the view DTDs provided by the
OverviewThe main windows of BBQ are: The condition and
answer windows are used for query composition, and define the head
and the body of the generated XMAS query, respectively. The actual
answers returned through the mediator are displayed in a separate window and can
be browsed in the usual way. Since the retrieved answers are valid XML
documents, they can be queried through BBQ as well. In this way, BBQ smoothly
integrates browsing and querying of XML data.
BBQ Demonstration (Experimental)The current, experimental version
of BBQ is implemented as a Java applet and requires Netscape Navigator.