I want to add some notes > create table diagnosis ( > pk serial primary key, > fk_patient integer > not null > references patient(pk) > on update cascade > on delete cascade, > narrative text > not null, > unique(fk_patient, narrative) > );
1) a sequence generates INT8 values (in general) and you have INT4 field to refer to a serial field. 2) narrative TEXT is very bad to check uniquness becauce it is non-formal human-generated native-language text. so it contains missprints, it may be rephrased many ways with the same meaning. 3) afaik a diagnosis doesn't belong to a patient, it belongs to a History, and History is marked with a date and status and belongs to a patient. do not treat my words as The Truth. ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
