What is two tier and three tier architecture?
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Answer Posted / kartheek yakkati
2 tier architecture :- A 2tier architecture have two
layers nothing but a Client server architecture.
3 tier architecture :- A 3 tier architecture have 3 layers
they are
1.Presentation layer : Its a front end which is implemented
on client.It is the top most layer of all the 3 layers.
2.Aplication logic layer : It is the layer in which all the
application logic is implemented.Every task will be
executed here,data required for the processes is retrieved
from the dedicated database servers which can be considered
as the third layer,and the results of all the processes
will be shown in the GUI whic is the top most layer.
3.Database layer : It is the last layer of the 3 tier
architecture,in this layer all the database will be stored
and retrieved by the application logic layer.In one term we
can say it as the "Storage layer".
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