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What is the Model View Controller Design Pattern?

Updated: 11/1/2022
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Anandvijayakumar

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11y ago

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The Model-View-Controller architecture compartmentalizes the data and business logic (model) from the presentation (view) from the user action interpreter (controller). This pattern is the hardest on the exam. The idea is closely related to the recent move from two-tier to three-tier architectures. The 3 tiers in a MVC Architecture of a J2EE Application are:

1. Model - Usually JavaBeans

2. View - Usually JSPs

3. Controller - Usually Servlets

This pattern is a clear functional separation of roles. It is a formalization of the data-business-presentation movement that dominated three-tier architectures over the last decade.

This pattern is very abstract. It is not simply a front end to a datasource connection.

This would be like an automobile. The speed of a car is affected by the accelerator pedal (Controller), the speed is shown by the speedometer (View), and the speed is determined by the engine power (Model).

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What is the relationship between MVC and 3-tier architecture?

At first glance, the three tiers may seem similar to the model-view-controller (MVC) concept; however, topologically they are different. A fundamental rule in a three tier architecture is the client tier never communicates directly with the data tier; in a three-tier model all communication must pass through the middle tier. Conceptually the three-tier architecture is linear. However, the 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.


Why jsp cannot be used as mvc controller instead of servlets?

Because JSPs are designed to take care of the View part of the MVC design patter and not the controller. You can have little or some amount of logic in it, but it is not designed/created with the idea of controlling the flow of control in a J2EE application.


What is MVC framework?

MVC stands for Model View Controller. This is a framework that is commonly used in Java applications where we separate the UI, data and processing logic from one another. Model stands for the Data View stands for the UI Controller stands for processing logic By separating these 3 items, we would be able to modify each of these independently and have an application which is much more robust and easier to maintain than normal frameworks.


Where agile model is used?

Agile model is used when the requirements changes very frequently and unpredictability exists i.e. analysis, design, and testing are not predictable (from a planning point of view ) as we might like.


Can you show HTML tags when working in Design view?

Most IDEs that offer a design view will also have a split view mode where you can see the design view on one side and HTML code on the either and whichever element you are manipulating on either side of the view will be focused on the other view as well. You did not specify a specific IDE but I know that Dreamweaver and Visual Studio both offer this.

Related questions

How does a servlet and javaserverpages fit in the ModelViewController pattern design?

Servlets form the Controller and JSP the View part of the MVC design pattern


Actually what is a model view controller?

The Model-View-Controller architecture compartmentalizes the data and business logic (model) from the presentation (view) from the user action interpreter (controller). This pattern is the hardest on the exam. The idea is closely related to the recent move from two-tier to three-tier architectures. The 3 tiers in a MVC Architecture of a J2EE Application are: 1. Model - Usually JavaBeans 2. View - Usually JSPs 3. Controller - Usually Servlets This pattern is a clear functional separation of roles. It is a formalization of the data-business-presentation movement that dominated three-tier architectures over the last decade. This pattern is very abstract. It is not simply a front end to a datasource connection. This would be like an automobile. The speed of a car is affected by the accelerator pedal (Controller), the speed is shown by the speedometer (View), and the speed is determined by the engine power (Model).


Which design pattern is used to decoupled presentation from core data access functionality?

Model-View-Control


What is a model view controller used for?

A model view controller is a software architecture pattern and the model is made up of application data, business rules, logic and functions and it separates the representation of information from the user's interaction with it. Basically, it can be used for personal computing, but more often it is used nowadays for world wide web applications as an architecture.


How to use MVC in Swing Application?

MVC stands for Model View & Controller. In Swings you can use this as follows: Model - Java Beans View - JFrames & JPanels Controller - Event Handlers


How jsp used in mvc model?

MVC refers to Model View Controller architecture. Jsp pages are the view part of the MVC architecture...


What is the definition of the word MVC architecture?

The definition of the the word MVC is: "Model-View-Controller (MVC) is a software architecture, currently considered an architectural pattern used in software engineering." The model consists of application data, business rules and all kinds of functions.


Two main type of models used in software?

(1) Model-View-Controller (2) Presentation-abstraction-control


What is the relationship between MVC and 3-tier architecture?

At first glance, the three tiers may seem similar to the model-view-controller (MVC) concept; however, topologically they are different. A fundamental rule in a three tier architecture is the client tier never communicates directly with the data tier; in a three-tier model all communication must pass through the middle tier. Conceptually the three-tier architecture is linear. However, the 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.


To view a table in Design view?

in the Views group, click the Views arrow and click Design view


Give a brief description about model view controller?

Model--View--Controller (MVC) is a software architecture,http://www.answers.com/mvc%20ARCHITECTURE#cite_note-Reenskaug-0currently considered an architectural-patternused in software-engineering. The pattern isolates "business-logic" (the application logic for the user) from user-interface(gui), permitting separation-of-concerns.The model is used to manage information and notify observers when that information changes. The model is the domain-specific representation of the data upon which the application operates. Domain logic adds meaning to raw data (for example, calculating whether today is the user's birthday, or the totals, taxes, and shipping charges for shopping cart items). When a model changes its state, it notifies its associated views so they can be refreshed.Many applications use a persistent storage mechanism such as a database to store data. MVC does not specifically mention the data access layer because it is understood to be underneath or encapsulated by the model. Models are not data-access-object; however, in very simple apps that have little domain logic there is no real distinction to be made. active-record-patternis an accepted design pattern which merges domain logic and data access code - a model which knows how to persist itself.The view renders the model into a form suitable for interaction, typically a user interface element. Multiple views can exist for a single model for different purposes. A viewport typically has a one to one correspondence with a display surface and knows how to render to it.The controller receives input and initiates a response by making calls on model objects. A controller accepts input from the user and instructs the model and viewport to perform actions based on that input.An MVC application may be a collection of model/view/controller triplets, each responsible for a different UI element.MVC is often seen in web applications where the view is the HTML or XHTML generated by the app. The controller receives GET or POST input and decides what to do with it, handing over to domain objects (i.e. the model) that contain the business rules and know how to carry out specific tasks such as processing a new subscription.Java programming Lanaguage MVC Frameworks:Shine Enterprise PatternStrutsSprint MVC Framework


What is mvc in jsp?

JSP is used for the V part of the MVC Architecture. MVC stands for Model-View-Controller Architecture and JSPs are used for the views.