EXERCISES

Name several entities, atributes, activities, events, and state variables for the following sy stems:

$($a$)$ A cafeteria

$($b$)$ A grocery storc

$($c$)$ A laundremat

$($d$)$ A fast$-$food restaurant

$($c$)$ A hospital emergency room

$($f$)$ A taxicab company with $10$ taxis

$($g$)$ An automobile assembly line