How do I use a database in a MERN application?

How do I use a database in a MERN application?

To use a database in a MERN application, you typically use MongoDB as your database. You can connect to it using Mongoose.

What is Mongoose and how does it help with MongoDB?

Mongoose is an ODM (Object Data Modeling) library for MongoDB and Node.js. It provides a schema-based solution to model your application data.

Can you show me a simple example of connecting to MongoDB using Mongoose?

Sure! First, install Mongoose with npm install mongoose. Then, use the following code to connect:

const mongoose = require('mongoose');

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