Fat-client is a computer that does not necessitate a connection to a server system to run although they can benefit from being connected to a network and a server. Fat client system means most of the functional modules of the application are performed on the clients. In other words it is a networked computer with most of the resources installed locally. In fact, majority of thick clients have their own operating system and software applications and can be used offline i.e. when not connected to any network or server.
In a thin-client model, all of the application processing and data management is carried out on the server. The client is simply responsible for running the presentation software.
Fat client system
