8. Using the STUDENT and PROFESSOR tables, illustrate
the difference between a natural join, an equijoin,
and an outer join.
9. Create the basic ERD for the database shown in
Figure Q3.8.
10. Create the relational diagram for the database shown
in Figure Q3.8.
Use Figure Q3.11 to answer Questions 11–13.
11. Create the table that results from applying a
UNION relational operator to the tables shown in
Figure Q3.11.
12. Create the table that results from applying an
INTERSECT relational operator to the tables shown in
Figure Q3.11.
13. Using the tables in Figure Q3.11, create the table that
results from MACHINE DIFFERENCE BOOTH.
14. Suppose you have the ERM shown in Figure Q3.14.
How would you convert this model into an ERM that
displays only 1:M relationships? (Make sure you create
the revised ERM.)