$6$a$)$ Show the CREATE TABLE statements for the table AREA $($assume that non$-$primary key columns are optional.$)$

$6$b$)$ Show the CREATE TABLE statements for the table AGENT $($assume that non$-$primary key columns can be optional.$)$

$6$c$)$ Show the CREATE TABLE statements for the table CLIENT $($assume that non$-$primary key columns can be optional.$)$

$6$d$)$ Show the INSERT INTO statements for the table AREA.

$6$e$)$ Show the INSERT INTO statements for the table AGENT.

$6$f$)$ Show the INSERT INTO statements for the table CLIENT.