postgresql7.3
select f.form_id, f.name as form_name, a.attribute_name, e.element_id,
e.widget, e.is_required, wp.param, ep.param_type,
ep.param_source, ep.value as param_value
from dtype_forms f, acs_attributes a, dtype_form_elements e
left outer join dtype_element_params ep using (element_id)
left outer join dtype_widget_params wp using (param_id)
where f.object_type = :object_type
and e.form_id = f.form_id
and a.attribute_id = e.attribute_id