Does it mean accessing multiple tables is not possible?
In case of a union, how can I distinguish which value comes from where when displaying the two time axes? Can I do a union even in case the tables have no columns in common?
How would the dataViewMappings would look like in that case? Categorial? Table? Matrix? (BTW, is there some documentation about 'matrix' somewhere?)
Thank you again,
. Jörg