The model as i have it is
Source_Exons Int COORD UNIQUE Int COORD #Splicing_confirmation // start at
1, to display gene splicing and translations
so the nice way for you to include the relational db id of the
exon in the acedb schema is to add a field rel_db_acc Text
in the #Splicing_confirmation constructed type
please use Text rather than ?Text so not to slow down the acedb code
i do not beleive you need the XREF on that (silly!) identifier
yours
jean