is it possible to let KeySource and Mastersource of a TIB_Query
(4.2Eb) point at the same datasource?
I want a TIB_LookupCombo for selection out of the middle table of a m
to n relation. One field of the edited table should make the
selection of the set as master source, the other the only selected
record as keysource. (I hope my discription is not too confusing)

When I do this in that manner i get the
error 'E_Multiple_Rows_In_Singleton' out of
TIB_BindingCursor.QuickFetch.

What do I make wrong?

Thank You
Dieter Tremel

P.S. Thanks to Helen Borrie for the answer about IsCurrency.