If you want to store the date in dd/MM/yyyy format then use varchar(10). for example create the small table to clearification
CREATE TABLE [dbo].[ABC](
[AttenDate] [datetime] NULL,
[attedate] [varchar](10) NULL
) ON [PRIMARY]
insert the recored
INSERT INTO [dbo].[ABC]
([AttenDate]
,[attedate])
VALUES
(21/12/2002
,'24/10/1989')
GO

it will add 00:00:00:000 automatically so use varchar data type if you want to store only dd/MM/yyyy