Hi, I want to notify the users when i create an article inside the database and publish it. There is some option that can be turned on?

Your users should be able to follow your Pages database category (or database itself if no categories). Here's an example of our Product Updates "blog" which we utilize Pages for. This then will notify your users via their notification settings each time there is a new record placed in the database.

Not sure if this would help but I find it a cool feature: if you are also running a forum, you can connect the database with a certain forum or subforum. Every new entry in the database will then automatically post a new thread in that subforum. The comments then show up in the forum thead and below the database entry.