What is actually three tire application?

Question

What is actually three tire application?

Answer 1

Note sure why this question is under Cars and Transportation category.

But if you are referring to IT.

Then here is your answer.

3 tier = Client (1tier) + Application server (2tier) + database server (3rd tier)

Client can be Internet explorer for web based applications, or any application in general.

Application server - A seperate instance that provides service to requests coming for client. This layer sole purpose is to process client requests and send requests to database server for data information. Application layer typically processes, reports, data entry screens, search screens, OLTP requests etc...

Database server - A seperate instance that hosts database and its services e.g. oracle, sql server, sysbase etc..

This instance processes the requests it gets from Application layer. Sole purpose is to manage the database.

3 tier architecture is most popular due to performance,since a dedicated services exists for each layer the processing is most efficient.

Regards

Ashutosh

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