Provide the names and birthdates of players who have left-arm fast skills.
player's name refers to Player_Name; birthdate refers to DOB; have left-arm fast skills refers to Bowling_skill = 'Left-arm fast'
SELECT T1.Player_Name, T1.DOB FROM Player AS T1 INNER JOIN Bowling_Style AS T2 ON T2.Bowling_Id = T1.Bowling_skill WHERE T2.Bowling_skill = 'Left-arm fast'