  The reference RDBMS for BESSY II has been set up with a device oriented data
model. This has proven adequate for e.g. template based RTDB generation,
modelling etc. But since assigned I/O channels have been stored outside the
database (a) numerous specific conditions had to be maintained within the
scripts generating configuration files and (b) several generic applications
could not be set up automatically by scripts. In a larger re-design effort the
I/O channels are introduced into the RDBMS. That modification allows to
generate a larger set of RTDBs, map specific conditions into database relations
and maintain application configurations by relatively simple extraction
scripts.
