a$.$ Explain primary key and decide the primary key of each table below. $(5$ points$)$

b$.$ Explain foreign key and decide foreign keys below. $(5$ points$)$ Person Table

Person$\_$ID Name Last name Age Gender$\_$ID Order$\_$ID

$1,$ Kas$$m G$$n $,28,1,1$

$2,$ Zeynep Galip $25,2,1$

$3,$ Tark Say $32,1,3$

Gender Table Order Table

Gender$\_$ID Gender

$1$ Male

$2$ Female

Order$\_$ID Order$\_$Number

$1,1456$

$2,2456$

$3,6785$