NestJS + TypeORM Deep Dive – Database Setup & Integration | Part 4

👉 📺 Watch the complete playlist here:
https://www.youtube.com/watch?v=jcqJi2PG5c0&list=PLU-FndeNRY4B4aUq7zd28awVNwWk9uVn-
Welcome to **Day 47** of the **NestJS Mastery Series** 🚀

Part-1
https://youtu.be/AUrD_7-sE0o
Part-2
https://youtu.be/SoiJm8GYj1g
Part-3
https://youtu.be/q4VvtOsh0d4
Part-4
https://youtu.be/-rer4KuXTi8

In this episode, we dive deep into **database integration in NestJS** using **NestJS** and **TypeORM**.

A backend application is incomplete without a properly structured database layer. In this video, you’ll learn how to connect your NestJS application to a relational database, configure TypeORM properly, and follow best practices used in real-world production systems.

## 📚 What You’ll Learn

✅ How database integration works in NestJS
✅ Installing and configuring TypeORM
✅ Setting up database connections (PostgreSQL / MySQL)
✅ Understanding **Entities** and how they map to tables
✅ Working with **Repositories** in NestJS
✅ Using `TypeOrmModule.forRoot()` and `forFeature()`
✅ Project structure best practices
✅ Common mistakes and performance considerations

## 🧠 Why This Matters

When building scalable backend systems, your database architecture must be:

* Clean
* Modular
* Maintainable
* Production-ready

Understanding how NestJS integrates with TypeORM helps you build:

* REST APIs
* Enterprise backend systems
* SaaS applications
* Microservices

This lesson sets the foundation for upcoming advanced topics like:

* Relationships (OneToMany, ManyToMany)
* Migrations
* Transactions
* Query Builder
* Performance optimization

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## 🛠 Tech Stack Used

* **NestJS**
* **TypeORM**
* PostgreSQL / MySQL
* Node.js
* TypeScript

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## 👨‍💻 Who Is This For?

✔ Node.js Developers
✔ Backend Engineers
✔ Developers learning NestJS
✔ Anyone preparing for backend interviews
✔ Developers building scalable APIs

Видео NestJS + TypeORM Deep Dive – Database Setup & Integration | Part 4 канала NestJS Simplified