Difference between 3-tier and MVC Architecture
Difference between 3-tier and MVC Architecture
At first glimpse, the three tiers look similar to the MVC (Model View Controller) concept; however; from the point of view of topology they are dissimilar. A basic rule in a 3-tier architecture is the client tier never contacts directly with the third tier; in a 3 tier model all communication must go through the middle tier. It is a concept that there architecture is linear while MVC architecture is triangular: the View relays commands to the controller the controller update the Model, and the view updates in direct manner from the model. This post will reveal the difference between 3-tier and MVC Architecture.
3-tier Architecture vs MVC Architecture
How it gets planned? Every Application possesses one or more the following layers:
1) Presentation Layer
2) Business Logic Layer
3) Data Access Layer
How they are altered from each other? 3-tier model usually has each layer separated from the network that is the presentation layer is on some servers, then that communicates to back end app servers on the network for application logic then that talks to a DB server, again on the network and may be the app server also contacts to some remote services (called Authorize.net for processing of payment). Sometimes we requires additional layers of the above mentioned type and more systems then is known as N tier.
What does MVC signifies? MVC is a programming design pattern in which different portions of logic have duty for displaying the model, view and controller in an application. These things are related because for example the Model layer may have an inner implementation that calls a DB for saving and fetching data. The controller may live on the webserver and call app servers remotely to fetch data. MVC generalizes the information of how the architecture of an application is implemented.
- Model on which model we desire to construct
- View Means User interface of the Application
- Control means the logic which manipulates the application
Process of Communication:
Communication in 3 Tier: 3 tier just refers to the physical structure of an implementation. These 2 are sometimes puzzled because an MVC design pattern is often implemented using a 3 tier model.In the 3 tier equivalent, communication b/w layers is done in two directions and always passes through the third tier.
Communication in MVC: In the MVC combining weight there is one way communication we can say that every layer is modified by the one at left side and in response updates the one at right where left and right are just demonstrative.
How they are practically used? In larger apps MVC is the presentation layer of an n tier architecture. The models, views and controllers are only intended to fill the models with data from the data tier. MVC can also be employed as the full 3 tier architecture in which views are presentation, Controllers are the business logic and models are data access layer(Usuallygenerated by DAL as in Entity Framework). In ideal manner whilst you want to be close and foolish, passing logic to a ‘business component’ which would significantly become your business logic layer. 3 tier is an architecture style and MVC is an architectural design pattern thus causes difference between each other. But we could using MVC design pattern in 3 tier model.
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To be frank I didn’t finish reading it because they are not comparable software architectures. 3-Tier is an overall application architecture whereas MVC is a presentation only architecture. Therefore, you could have a 3-Tier MVC project because the Presentation layer would follow the MVC methodology. MVC methodology has no concept of connecting to a DB or anything of that nature aside from the fact that the controller should do the work. Trying to compare the 2 against each other is like comparing apples against apple seeds.
Very critical and detailed output. Yup you are right upto some point.