The Query Editor includes three input panes. One is the graph pane, which
presents a graphical rendition of the query. Nodes in the graph represent
instances of tables in the FROM clause; edges represent equality constraints
between columns of the respective tables, typically imposed by Foreign Key
The current graph pane is implemented with jgraph. This task will port it to
the Netbeans Graph Library.
Completed for M9.
This could be enhanced to take fuller advantage of Graph Library features, but
that's a separate task.