Consider E$/$R diagrams given in Figures $6\mathrm{.}10,6\mathrm{.}11,$ and $6\mathrm{.}12.$

$($a$)$ Convert Fig. $6\mathrm{.}10$ to a reletional database schema

$($b$)$ Convert Fig. $6\mathrm{.}11$ to a reletional database schema

$($c$)$ Convert Fig. $6\mathrm{.}12$ to a reletional database schema