This Post explains different files which will be installed on your PC when you install Jamku.
Jamku as two version - Offline and Cloud.
When Jamku gets installed on the User PC (i.e. Client PC), Files created will be same irrespective of the version of Jamku your organisation has chosen.
In case your organisation has purchased license for Offline, there will be a PC in network, which will assigned server Role. This PC will host (i.e. stored) database. This PC will act like a Server and other PC must be connected with this Server PC to be able to use Jamku Office Management.
If your organisation has purchased license for Cloud version of Jamku, database is hosted on cloud, hence there is no need for a PC which acts like a server. This gives flexibility to users to work on software from anywhere and anytime.