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What is the difference between 2-Tier architecture and
3-Tier architecture
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Answer Posted / vijay
2-tier architecture:
2-tier architecture is also called as
client-server architecture, in this architecture both
presentation logic+business logic will in one layer and
database logic will be in another layer . This architecture
is used with in a limited area .
-)Clients retrive fast infromation from server
drawbacks:
1: Both presentation logic&business logic will be in same
layer there will be miss use of business logic(Hacking).
2: Used in limited area.
3:Here clients are called thick clients
ex:banking applications,small scale industry
3-tier architecture:
3-tier architecture is also called as web
environment ,in this presentation logic&business
logic&database logic will be in different layers
.presentation logic is in the client layer and business
logic is in the application server and database logic will
be in server side.
advantages:
1:security is very high bcoz business logic is present in
the application server.
2:Here clients are called thin clients.
drawbacks:
1:while client request any information from server it takes
much time.
2:Each application server contain one busines logic in one
layer.
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