REPORT  Z07_007                                                     .
TYPES: BEGIN OF line,
         col1 TYPE i,
         col2 TYPE i,
       END OF line.
DATA itab TYPE SORTED TABLE OF line WITH UNIQUE KEY col1
               WITH HEADER LINE initial size 3.
DO 4 TIMES.
  itab-col1 = sy-index.
  itab-col2 = sy-index ** 2.
  INSERT TABLE itab.
ENDDO.

itab-col1 = 2.
READ TABLE itab FROM itab.

itab-col2 = 100.
MODIFY TABLE itab.

itab-col1 = 4.
DELETE TABLE itab.
LOOP AT itab.
  WRITE: / itab-col1, itab-col2.
ENDLOOP.