sql>declare
  2    type tibt is table of varchar2(10) index by binary_integer;
  3    type tva  is table of varchar2(10);
  4    v_ibt  tibt;
  5    v_va   tva := tva();
  6  begin
  7    -- index-by table
  8    for i in 1..3 loop
  9      v_ibt(i) := 'Test ' || i;
 10    end loop;
 11    for i in 1..v_ibt.count loop
 12      dbms_output.put_line( v_ibt(i) );
 13    end loop;
 14  
 15    -- varray
 16    for i in 1..3 loop
 17      v_va.extend;
 18      v_va(i) := 'Test ' || i;
 19    end loop;
 20    for i in 1..v_va.count loop
 21      dbms_output.put_line( v_va(i) );
 22    end loop;
 23  end;
 24  /

-- this is the index-by table output
Test 1
Test 2
Test 3

-- this is the varray output
Test 1
Test 2
Test 3