So you have finished a system after a significant amount of time. Everything seems to be in place. You have the queries for database and normalized the database. The system is probably bug-free(maybe for now). The design is neat and not confusing which can give the "user-friendly" touch. Everything seems to be ok and in the moment of publishing.
But what does a computer system usually require in terms of hardware( or maybe software as well) before it can be put in the computer? Do you need a specific hardware for the database like a very big machine? Or will a standard computer will do just fine? Does the computer need a very big amount of RAM in order to run the system? And does the graphics on the finished system can be enough for the graphics card of the computer system? I hope you didn't get confused with what I said.