It's just like it's written, I need to know what code to write in Oracle Live sql for this. I need the answer by Friday.

Overview: In SQL, you use the NOT NULL clause in a CREATE TABLE command to indicate columns that cannot contain NULL values. Students will modify the table below to include the NOT NULL clause for: - LAST_NAME - FIRST_NAME To complete this, students will use the ALTER TABLE Command See below: See page 71 for further assistance. - ALTER TABLE REP - MODIFY - LAST_NAME CHAR(15) NOT NULL, - FIRST_NAME CHAR(15) NOT NULL; Provide a screen shot of your script and the results after you run the script