| Task | Answer |
|---|
| Find out the last names for teachers
|
Answer |
| Find out the cities where students live in.
|
Answer |
| Find out the phone number of Susan Smith, the teacher
. |
Answer |
| Find out teachers' specialities. Include in the answer the first and last name of the teacher
and the name of his/her speciality
|
Answer |
| Are there any persons that are both teachers and students
. |
Answer |
| Find out the specialities that nobody studies
|
Answer |
| Find out the courses where the lecturer also instruct the exercises
|
Answer |
| Find out the courses where the lecturer does not instruct the exercises
|
Answer |