How can I integrate a database with Node.js?

How can I integrate a database with Node.js?

You can integrate a database with Node.js using various libraries like Mongoose for MongoDB or Sequelize for SQL databases.

What are the steps to connect to a MongoDB database?

First, install Mongoose using npm. Then, use mongoose.connect() to connect to your MongoDB instance.

Can you show me a sample code for connecting to MongoDB?

Sure! Here's a simple example:

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost:27017/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => console.log('MongoDB connected!'))
  .catch(err => console.error('Connection error', err));

What if I want to use PostgreSQL instead?

You can use Sequelize for PostgreSQL. Install it via npm and set up your connection similarly.