text: CREATE PROCEDURE [dbo].[UpdateStudent]
  	@PersonID int,
  	@LastName nvarchar(50),
  	@FirstName nvarchar(50),
  	@EnrollmentDate datetime
  	AS
  	UPDATE Person SET LastName=@LastName, 
  			FirstName=@FirstName,
  			EnrollmentDate=@EnrollmentDate
  	WHERE PersonID=@PersonID;