Change Data format in a Scheme

I have a Scheme in Oracle 8i , and I want to change date format. Now when , for example ,I do : Select SYSDATE from DUAL ; I obtain 02-apr-2002 , I'd like that system return 02-04-2002. How can I obtain this ?

Hello
Flex

P.S. Excuse me 4 my bad English !!! Received on Tue Apr 02 2002 - 05:22:01 CST