I want to do something like:
DELETE FROM student WHERE
student.course, student.major IN
(SELECT schedule.course, schedule.major FROM schedule)
In Oracle, you can do a delete from an in-line view, but it generally needs a foreign key that ensures that a row from the table from which the row is deleted cannot be represented by more than one row in the view.
create table parent (id number primary key);
create table child (id number primary key, parent_id number references parent);
insert into parent values(1);
insert into child values(2,1);
delete from (select * from parent p, child c where c.parent_id = p.id);