How do I put the eclipse war file on "Internet" and also the data that I have stored initially on MySQL server on my laptop

I built this small web app in eclipse (has Jsp pages, java interface, and hibernate for database connectivity).

Now I want to host this as a website. I have the basic idea about web hosting, but what about the database ?? How do I connect the website with that database ??

In short...

1: How do I host a website which is currently in the form of a war file ?

2: How do I put the data which is present in database online (if there is anything called online database) and then keep it connected with my web app ?