What is MVC Architecture? Explained with Web App Example


What is MVC Architecture?

MVC (Model–View–Controller) ek software design pattern hai jo application ko three logical parts me divide karta hai:

  1. Model – Data & business logic

  2. View – User Interface (UI)

  3. Controller – User request ko handle karta hai

MVC ka main goal hota hai:
👉 Code ko clean, organized aur maintainable banana


Why MVC Architecture is Used?

MVC use karne ke benefits:

  • ✔ Code easily samajh aata hai

  • ✔ Changes karna easy hota hai

  • ✔ Team me kaam karna easy hota hai

  • ✔ Large web applications ke liye best


Components of MVC Architecture

1️⃣ Model

  • Data ko represent karta hai

  • Database se interact karta hai

  • Business logic handle karta hai

📌 Example:

  • User data

  • Product data

  • Login validation


2️⃣ View

  • User ko jo screen dikhai deti hai

  • HTML, CSS, UI design yahin hota hai

📌 Example:

  • Login page

  • Registration page

  • Dashboard


3️⃣ Controller

  • User request ko handle karta hai

  • Model aur View ke beech bridge ka kaam karta hai

📌 Example:

  • Login request receive karna

  • Data Model ko bhejna

  • Result View me show karna


MVC Architecture Diagram (Text Representation)

User → View → Controller → Model → Controller → View → User

MVC Architecture Working (Step by Step)

  1. User browser me login page open karta hai

  2. User form submit karta hai

  3. Request Controller ko jati hai

  4. Controller Model se data mangta hai

  5. Model database se data fetch karta hai

  6. Controller result View ko bhejta hai

  7. View output user ko show karta hai


Web Application Example (Login System)

🔹 Model (UserModel)

  • Database se user details check karta hai

🔹 View (login.html)

  • Login form show karta hai

🔹 Controller (LoginController)

  • Username & password receive karta hai

  • Model ko check ke liye bhejta hai

  • Result ke basis par View return karta hai


MVC in Popular Technologies

TechnologyMVC Support
JavaSpring MVC
PythonDjango, Flask (partial MVC)
PHPLaravel
.NETASP.NET MVC

Advantages of MVC Architecture

  • Clean code structure

  • Reusable components

  • Easy testing

  • Scalable architecture


Disadvantages of MVC Architecture

  • Beginners ke liye thoda complex

  • Small projects ke liye heavy lag sakta hai


MVC Architecture Interview Questions

Q1. What is MVC?
👉 MVC is a design pattern that divides application into Model, View and Controller.

Q2. Which part handles business logic?
👉 Model

Q3. Which part handles user request?
👉 Controller


Conclusion

MVC Architecture ek powerful design pattern hai jo modern web applications me widely use hota hai.
Agar tum web development ya software engineering sikh rahe ho, to MVC samajhna bahut important hai.



Post a Comment

0 Comments