I have a problem with inheritance and references. TABLE parent_table ( id_parent SERIAL PRIMARY KEY, .... ) No primary key in child TABLE child_parent ( ..... ) INHERITS (parent_table); And another table : TABLE other_table ( ref_child_table INTEGER REFERENCES parent_table ); Reference must be take on parent_table, as child_parent inherit parent_table's primary key. On child_table, it doesn't work (No primary key in child_table). So, it's ok for creating, but I can't do INSERT into other_table because postgresql search primary key into parent_table instead into child_table. How can I do this ? Please Help...