Chapter 6, Problem 20MC

Refer to the sample tables and sample data below. Then answer questions (a), (b), (c), and (d). Tables: adult (id(pk), name, spouse_id (fk)) -- foreign key (spouse_id) references adult(id) child (id(pk), name) parent_child (parent (pk, fk), child (pk, fk)) -- foreign key (parent) references adult(id) -- foreign key (child) references child(id) mysql> SELECT * FROM adult; id | name 1 Homer Simpson 2 | Marge Simpson 3 Fred Flintstone 4 Wilma Flintstone | mysql> SELECT * FROM child; |id|name 11 Bart 12 Lisa 13 Maggie 14 Pebbles 1 2 | spouse_id mysql> SELECT * FROM parent_child; parent | child | 2 1 2 3 | 41 11 | 11 12 12 13 13 14 14 1 4 How many times will the names Bart and Homer Simpson appear in the result set from the following command? SELECT c.name, a.name FROM child c JOIN parent_child pc ON c.id = pc.child JOIN adult a ON a.id = pc.parent; (a) Bart appears [Select] (b) Homer Simpson appears [Select] times. ✓times.

Which syntax is correct for removing a public synonym?a. DROP SYNONYM synonymname;b. DELETE PUBLIC SYNONYM synonymname;c. DROP PUBLIC SYNONYM synonymname;d. DELETE SYNONYM synonymname;

7. Create a private synonym that enables you to reference the MY_FIRST_SEQ object asNUMGEN.