# Modules and Interaction

Below is an image of the relationships between the separate modules in a Atlas Copco Data Communication installation. One server running the Atlas Copco Data Communication application, which obtain the data from the controllers (1), and one database server hosting the Atlas Copco Data Communication database. In a standalone installation, both the server module (2) and the database module (3) will be installed and run on the same machine.

1 | Clients and controllers
2 | Server module
3 | Database module