Joined Relations-Examples course inner join prereg on course.course id prereg.course id course id title dept name credits prereq id course_id BIO-301 Genetics Biology 4 BIO-101 BI○-301 CS-190 Game Design Comp.Sci. 4 CS-101 CS-190 What is the difference between the above,and a natural join? course left outer join prereg on course.course_id prereg.course id course id title dept name credits prereq id course id BIO-301 Genetics Biology 4 BIO-101 BIO-301 CS-190 Game Design Comp.Sci. 4 CS-101 CS-190 CS-315 Robotics Comp.Sci. 3 null null Database System Concepts-6th Edition 4.10 ©Silberschat乜，Korth and SudarshanDatabase System Concepts - 6 4.10 ©Silberschatz, Korth and Sudarshan th Edition Joined Relations – Examples course inner join prereq on course.course_id = prereq.course_id What is the difference between the above, and a natural join? course left outer join prereq on course.course_id = prereq.course_id