The requirements f$$r $$ sm$$ll d$$t$$b$$se $$ppli$$ti$$n $$re listed bel$$w$.$ Design the d$$t$$b$$se f$$r the $$ppli$$ti$$n$.$ Dr$$w $$n entity$-$rel$$ti$$nship di$$gr$$m in third n$$rm$$l f$$rm$.$ List the entities $$nd the $$ttributes $$f e$$h entity $($r in$$lude them in the ERD$).$ Pr$$vide $$ny ne$$ess$$ry $$nstr$$ints$.$

a$.$The $$ppli$$ti$$n d$$t$$b$$se will tr$$k medi$$l tests $$rried $$ut $$n h$$spit$$lized p$$tients$,$l$$ng with the test results. Hist$$ri$$l d$$t$$n previ$$us test results must be m$$int$$ined t$$id in underst$$nding new test results.

b$.$D$$t$$rs $$re $$redited t$$ h$$spit$$ls$.$ E$$h d$$t$$r m$$y be $$redited t$$ m$$re th$$n $$ne h$$spit$$l$.$

c$.$Fr$$m time t$$ time, p$$tients $$re $$dmitted t$$nd dis$$h$$rged fr$$m h$$spit$$ls$.$ p$$tient m$$y $($t different times$)$ be $$n inp$$tient in different h$$spit$$ls$.$

d$.$D$$t$$rs $$rder tests f$$r p$$tients$.$ d$$t$$r $$nn$$t $$rder $$ test f$$r $$ p$$tient unless the p$$tient h$$s been $$dmitted t$$ h$$spit$$l t$$ whi$$h the d$$t$$r is $$redited$.$ p$$tient m$$y h$$ve the s$$me test run multiple times.

e$.$h test h$$s $$ unique identifying $$de $$nd $$ des$$ripti$$n$.$

f$.$E$$h h$$spit$$l w$$rks with multiple l$$bs$.$ S$$me l$$bs $$re $$wned $$nd $$per$$ted by the h$$spit$$l$,$ while $$thers $$re n$$t$.$ S$$me $$f the independent l$$bs w$$rk with multiple h$$spital

g$.$E$$h test run must be re$$rded$,$ in$$luding the d$$te$,$ time, p$$tient$,$ l$$b$,$ d$$t$$r$,$nd test results.