Answer / 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.

Answer / rama

In two tier application only two tiers will be there one is
presentation layer and mixing of businesslayer and
dataacess layer .in three tier architecture every layer is
seperate.

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