Unlikely. Best of all, if nervously, to encrypt data in the database itself. Then if you want, there's a chance that nothing will realize and understand the source code will not. But if you really, really should be sorted out. They have the same iron access is.
You can still base spread across multiple VPS of different providers. Well, imagine the name in one database, the name to another address in the third. This will all work very slowly, but if you are not in a hurry - inside paranoid will be pleased.