I was using explicit IDs because i need them to satisfy foreign key
constraints, and also to look them up within the file, but then i had
the problem that the sequences would be left at 1, preventing me to
add new contacts or products, for instance.
Now i use the sequence exactly how the application will (i.e., with
default values), but i have to reset them to 1 to make the ID stable
even when i make tests with pgTAP on the same database.
jordi fita mas
2a98b9c0af