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Answered by: Karanjeet

• Nov 22nd, 2005

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Following are the tier types in a client server application:

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.

Avinash

• Nov 24th, 2012

If I am not wrong

Class variables are variables which we create inside a class.

&

Class member are the variables & function declared inside class.

Manoj Kumar Chagantipati

• Jun 12th, 2012

In Two tier there will be Presentation layer and Data base layer
Where as in Three tire there will be Presentation layer,Data access layer and Data base layer

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