select rel_id from acs_rels where rel_type = 'application_link' and (object_id_one = :package_id or object_id_two = :package_id) select object_id_two from acs_rels where object_id_one = :package_id and rel_type = 'application_link' select p.package_id from acs_rels r, apm_packages p where r.object_id_one = :from_package_id and r.object_id_two = p.package_id and p.package_key = :to_package_key and r.rel_type = 'application_link'