DENTED 614 สอนโดย Prof. Virginia Murphy หรือ Prof. James Borders เสมอหรือไม่ ไม่จำเป็นต้องใช้ตารางทั้งหมด
Is DENTED 614 always taught by Prof. Virginia Murphy or Prof. James Borders ?It is not neccessary to use all the tables.
 comment_instructor:  instructor_id [ int]  student_id [ int]  score [ int]  comment_text [ varchar] 
SELECT COUNT(*) = 0 FROM course, course_offering, instructor, offering_instructor WHERE (NOT instructor.name LIKE '%Virginia Murphy%' AND NOT instructor.name LIKE '%James Borders%') AND course.course_id = course_offering.course_id AND course.department = 'DENTED' AND course.number = 614 AND offering_instructor.instructor_id = instructor.instructor_id AND offering_instructor.offering_id = course_offering.offering_id