On Update Cascading Action
Having a look of easySDI database structure, quite all constraints have got no action attached to ON UPDATE event!
It is very important to define CASCADE action to such event to guaranty data coherence if technical id have to change (i.e. for data migration, for future easySDI changes in sys tables content, and so on...).
So all relations constraint must be altered (in fact removed and recreated) for ON UPDATE event to attach CASCADE action.