That was very helpful, many thanks
About timestamp, I understood that as long as the DB server is the one
to log times it is safe to use it without timezones?? (I am not using
any of the different timezoned clients??) am i missing the point?
about all_table_columns, it is just a simple view to have the table
name and column name in the same view, (wasn't satisfied in
pg_attribute only :), am i duplicating anything?