Oracle SQL Plan operation EXTENDED DATA LINK FULL

explain plan for
   select *
   from
      sys.int$dba_procedures;

select * from table(dbms_xplan.display(format=>'basic'));
--
-- ---------------------------------------------------------
-- | Id  | Operation                  | Name               |
-- ---------------------------------------------------------
-- |   0 | SELECT STATEMENT           |                    |
-- |   1 |  PX COORDINATOR            |                    |
-- |   2 |   PX SEND QC (RANDOM)      | :TQ10000           |
-- |   3 |    PX PARTITION LIST ALL   |                    |
-- |   4 |     EXTENDED DATA LINK FULL| INT$DBA_PROCEDURES |
-- ---------------------------------------------------------