What is an ORM in Node.js and how do I use it?

What is an ORM in Node.js and how do I use it?

An ORM, or Object-Relational Mapping, is a programming technique that allows you to interact with a database using objects. In Node.js, ORMs like Sequelize or TypeORM help you manage database operations more easily.

Can you give me an example of how to set up Sequelize?

Sure! First, install Sequelize and the database driver using npm. Then, initialize Sequelize in your project and define your models. Would you like a code snippet?

Yes, please provide a code snippet for setting up a model.

Here's a simple example:

const { Sequelize, DataTypes } = require('sequelize');
const sequelize = new Sequelize('database', 'username', 'password', {
  host: 'localhost',
  dialect: 'mysql',
});

const User = sequelize.define('User', {
  username: {
    type: DataTypes.STRING,
    allowNull: false,
  },
  password: {
    type: DataTypes.STRING,
    allowNull: false,
  },
});

// Sync the model with the database
User.sync();

How do I perform CRUD operations using Sequelize?

You can perform CRUD operations using methods like create(), findAll(), update(), and destroy(). Would you like examples for each?