Criar default values no XSD gerado

Verificar defaults da tabela para cria-los no dataset XSD

SELECT c.COLUMN_DEFAULT
FROM INFORMATION_SCHEMA.COLUMNS c
WHERE c.COLUMN_DEFAULT IS NOT NULL
and c.TABLE_NAME = ''
AND C.COLUMN_NAME = ''

Another Way
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q318048