web.config file in hosting

thanks for the answer but I have already done all that, as I said before, the program is already done with the roles and such but now I want it to be able to be executed on a web.
The problem I had before with connectionStrings seems to have been more or less solved, but now the problem is that the program creates the database every time it is executed, and the hosting database engine tells me that the database is already created and I can not continue.
On localhost there were no problems running the program.