You can convert it during the select statement
mysql> select datum from a;
+------------+
| datum |
+------------+
| 2002-01-01 |
+------------+
1 row in set (0.00 sec)
mysql> select date_format(datum,"%m/%d/%y") as datum from a;
+----------+
| datum |
+----------+
| 01/01/02 |
+----------+
1 row in set (0.00 sec)
mysql> select date_format(datum,"you can format %m!%d as u want /%y") as datum from a;
+------------------------------------+
| datum |
+------------------------------------+
| you can format 01!01 as u want /02 |
+------------------------------------+
1 row in set (0.00 sec)
mysql> select date_format(datum,"%m/%d/%Y") as datum from a;
+------------+
| datum |
+------------+
| 01/01/2002 |
+------------+
1 row in set (0.00 sec)
http://www.mysql.com/doc/en/Date_and_time_functions.html