EasyE4 send data to database
Hi and welcome to Electrical Engineering stack exchange. It's usually helpful to put a link to the device you are asking about.

From the Eaton website:


  The JSON API of the easyE4 web server can be used to communicate via
  HTTP-GET requests. This means that operands, device settings and
  easyE4 data can be accessed in writing and reading mode in different
  programming environments.


So this means you'd need to have a server side program that pulls JSON data from the easyE4 and then stuff that data into the database.  

There are many architectures that can solve this.  One example would be, the program can live on the same server as the DB and then you don't need to have a remote connection to the DB.