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what is two tier application? and what is three tier
application?and what is the basic difference? explain with
a example?

Answer Posted / anu

Two tier application will have 2 layers

Presentation Layer:i.e. Front end
Bussiness and Database Layer

Three Tier application has 3 layers
Presentation Layer:i.e. Front end
Bussiness Layer:Which contains all business logic
Database Layer:Where all data is stored.

Example:If any condition is given for a search to display
the data.

In 3tier application that condition will be recevied by
Bussiness layer:search is carried as per requirement and
message will be sent to databse to display the details.

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