If you try to update the table of any database, you will get the error message: "You don't have permission to update this database". You found this error because you do not have write access to our server.

but, if you copy the same code and execute it on your own system, you might get the same error. That is because the system might see you as an anonymous internet user when you access the file via your browser. In that case, you have to change the access-rights to get access to the file.