Ross creates a database for a school.

SELECT Stud.Student_ID, Cou.Course_ID

FROM Students Stud, Courses Cou

WHERE Stud.Course_ID (+) = Cou.Course_ID;

SELECT Stud.Student_ID, Cou.Course_ID

FROM Students Stud, Courses Cou

WHERE Stud.Fees BETWEEN Cou.Min_Fees and Cou.Max_Fees;

SELECT Stud.Student_ID, Cou.Course_ID

FROM Students Stud, Courses Cou

WHERE Stud.Course_ID = Cou.Course_ID;

SELECT Stud.Student_ID, Cou.Course_ID

FROM Students Stud, Courses Cou

WHERE Stud.Student_ID = Cou.Course_ID;