I do not have Access 2013 but the way I understand it is you will need to use SharePoint to host the data. Access 2013 uses a newer technology than previous versions with regard to Web Databases. This new technology may allow more conventional methods of connecting to SQL server using Internet Browser interfaces. However, I have yet to try it. Most of the research I have come up with tells me you will still need to create a SharePoint list to view, edit, delete the data on your published database.
http://msdn.microsoft.com/en-us/libr...ffice.15).aspx
I believe the type of SQL backend that is created by Access has restrictions on remote connections, much like SQL Server Express edition does.