This lab uses the university database. Open the tabs and look for column names that two tables share.

1. Every row of takes with the student's name: the student's name, the course_id, then the grade. Use USING.
2. Think before you run it: how many rows does student NATURAL JOIN takes return?
3. Think before you run it: how many rows does student NATURAL JOIN takes NATURAL JOIN course return? Run it to check.
4. Every row of takes with the student's name and the course title: name, then title. No row may be dropped.
5. Which column made the three-table natural join drop rows?