Several people have had some issues with getting this to work. Sometimes it's because they are attempting to read a page from another domain, there are restrictions on doing that but if you have a DB on your server and your requesting pages within the same domain then it's not an issue. That is why I created this demo.
It uses C# .aspx pages to connect to an Access database. You can make calls from a Fusion HTML5 application, using the Get object, to those pages and add, update, or delete information in the database. This way if you can upload an Access database and .aspx files to your server then you don't have to worry about hosting pages on one domain while your database is hosted on another thereby eliminating the CORS issues.
I posted it in the App Builders Network group here...
If anyone knows PHP and cares to help out by writing PHP files that do the same thing as the C# .aspx files do it would be nice to have 2 options for connecting to an Access database. I know there are a bunch of PHP people that use Fusion so it may be a big help.