a. 1 tier application: All the processing is done on one
machines and number of clients are attached to this machine (mainframe
applications)
b. 2 tier application: Clients and data base on different machines. Clients are thick clients i.e. processing is done at client side.Application layer is on Clients.
c. 3 tier application. Client are partially thick.Apart from that there are two more layers application layer and database layer.
d. 4 tier application: Some clients may be totally non thick clients some clients may be partially thick and further there are 3 layers web layer, application layer and database layer.
b. 2 tier application: Clients and data base on different machines. Clients are thick clients i.e. processing is done at client side.Application layer is on Clients.
c. 3 tier application. Client are partially thick.Apart from that there are two more layers application layer and database layer.
d. 4 tier application: Some clients may be totally non thick clients some clients may be partially thick and further there are 3 layers web layer, application layer and database layer.
