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What is Model-View-Controller?

Model-View-Controller

An architectural pattern that separates a software's data, interface, and logic.

Overview

Model-View-Controller is a popular design pattern that prevents code from becoming tangled during software development. The Model part manages the database and business logic, while the View part presents the design that the user sees on the screen. The Controller acts as a bridge between the two, transmitting the user's actions to the Model and reflecting the result back on the screen.

Analogy: It is like the operations in a restaurant. The Model represents the ingredients and recipes in the kitchen, the View is the table and plate where the customer sits, and the waiter acts as the Controller going back and forth between the kitchen and the customer.

How it works

When developing an application, you write database operations, design codes, and business logic in separate files. The Controller captures the user's request and, if necessary, fetches data from the Model and sends it to the View. This way, when an error occurs in one place, you can easily fix it without breaking the other parts.

Where it is used

It is widely used when designing websites, mobile applications, and large enterprise software.

Commonly confused with

It is not a direct database or interface library; rather, it is a high-level architectural pattern that determines how the entire system should be organized.

Questions and answers

Why should we use this structure instead of writing everything in a single file?

Because as the project grows, you get lost in the code; when you want to change the design, the database codes might break. This structure provides order.

Is it mandatory to use it in small projects as well?

It is not mandatory, but small projects can also grow over time, so starting with this mindset from the foundation makes your job easier later on.

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This explanation was written in plain language for TreScout with AI and machine-translated from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to hello@trescout.com. Read in Turkish →