instructure-uploads.s3.amazonaws.com #4. How do you undo the change you made in Questions #2 & #3? ( I.e. it is only ONE command to undo all of the changes that you made. ) Write the SQL code to delete the row for William Smithfield, who was hired on June 22, 2004, and information given in the problem. ) #6 #7 whose job code is 500. ( Hint use logical operators include all of the Show the code that created the first row in the "JOB" table. What would you expect the output to look like if you did a Natural Join on the 2 tables, showing only the columns of the employee's last name and the job type