How is ER diagram for patient billing system draw?

You have to first identify entities, process entities:doctors,patients,wards,labs,nurses,suppliers,pharmacy process:admission. Treatment, discharge, prescritption Note:you better write down the flow of hospital activities, from this you can identify entities and process.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.