what is the difference between 3 tier architecture and a mvc ?
Are they same?
Both have 3 layers i.e model, views and controller
what is the difference between 3 tier architecture and a mvc ?
Are they same?
Both have 3 layers i.e model, views and controller
http://en.wikipedia.org/wiki/Multitier_architecture Briefly, in 3-tier architecture, presentation tier never communicates directly with data tier. In MVC, the relation among model, view, and controller is triangular. Two of three can communicate each other
MVC is a pattern used to make UI code easier to maintain and test. When the MVC pattern is used a larger portion of the UI code can be unit tested.
Here is a good article which describes the MVC pattern in more detail: http://martinfowler.com/eaaDev/uiArchs.html
3 tier architecture is a pattern used for a completely different reason. It separates the entire application into meaningful "groups": UI, Business Logic, Data Storage.
So 3 tier application refers to all code in the application. The MVC pattern is a pattern used in the UI tier.
Here is a good article on the 3 tier architecture: http://dotnetslackers.com/articles/net/IntroductionTo3TierArchitecture.aspx
For further information you can search the internet and find a gazzilion articles on both subjects.
first of all, tier is for physical deployment, what you mean maybe layers, and MVC is a framework for the presentation layer, that's all
I recommend you try building a web app with some technologies that use MVC and three tiers to really understand the differences between them, I suggest you use ruby on rails with a templating engine since rails is one of the most known MVC frameworks
The main difference between both is: A “tier” in this case can also be referred to as a “layer”. The three tiers, or layers, involved include: A Presentation Layer that sends content to browsers in the form of HTML/JS/CSS. This might leverage frameworks like React, Angular, Ember, Aurora, etc. An Application Layer that uses an application server and processes the business logic for the application. This might be written in C#, Java, C++, Python, Ruby, etc. A Data Layer which is a database management system that provides access to application data. This could be MSSQL, MySQL, Oracle, or PostgreSQL, Mongo, etc.
MVC architecture is triangular: the view sends updates to the controller, the controller updates the model, and the view gets updated directly from the model
In three tier solution the UI is separated from the business tier to make sure that the UI designer who is concerned with the look and feel is not confused with the heavy programming which is left to the programming professions.
This architecture (three tier) is essential when a large number of people are involved in producing a large application.
Their are similar in a way, like:
But the difference comes from how the tiers communicate with each other:
Comparison with the MVC architecture
Source: http://en.wikipedia.org/wiki/Multitier_architecture#Three-tier_architecture