+------+--------------+--------+--------+-------+
| Id   | Nome         | Utente | Gruppo | Padre |
+------+--------------+--------+--------+-------+
|  121 | tmp0.txt     | rossi  | user   |    12 | 
|  122 | tmp1.txt     | verdi  | user   |    12 | 
| 1111 | rossi.mbx    | rossi  | mail   |   111 | 
| 1112 | verdi.mbx    | verdi  | mail   |   111 | 
| 1311 | slide.txt    | rossi  | user   |   131 | 
| 1312 | progetto.pdf | rossi  | user   |   131 | 
| 1321 | eserc1.sql   | rossi  | user   |   132 | 
+------+--------------+--------+--------+-------+