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What is three tier architecture
What is three tier architecture?
✍: Guest
The three tier software architecture emerged in the 1990s to overcome the limitations of
the two tier architecture.
There are three layers when we talk about three tier architecture:-
User Interface (Client) :- This is mostly the windows user interface or the Web interface
but this has only the UI part.
Mid layer: - Middle tier provides process management where business logic and rules are
executed and can accommodate hundreds of users (as compared to only 100 users with
the two tier architecture) by providing functions such as queuing, application execution,
and database staging.
Data Access Layer: - This is also called by the famous acronym "DAL" component. It has
mainly the SQL statement which do the database operation part of the job.
The three tier architecture is used when an effective distributed client/server design is
needed that provides (when compared to the two tier) increased performance, flexibility,
maintainability, reusability, and scalability, while hiding the complexity of distributed
processing from the user.
2007-10-24, 5207👍, 0💬
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