In college, I was required to do an ERD for a site that buys, sells, and rents cars. The user is supposed to be able to offer his car for sale or rent, and he can also buy or rent a car.
erd diagram Car buying and selling website
I tried to do what is in the picture, but I think it is a mistake Does anyone know how I can do this or what I need to modify in the image?
I do not know what to do