Being rather new to DBs in general, I wonder - is the relation constraint present in PostgreSQL? Is this the same as relations I've seen under other databases ? MS Access has to be a poor example but I've seen tables relationed between themselves. Using a relation constraint, are tables tied together automatically, thus removing the need to use a 'WHERE table1.index = table2.t1index' in select clauses retreiving data in table2 and table1? christian
