Updated on 21 Aug 2019 | 3 Min Read

MongoDB and Node.js interaction

Node.js is a rapidly emerging technology that has been overtaking the world of scripting side programming language with surprising speed. MongoDB is a technology that totally revolutionizes database usage. Both these tools are a potent combination, as MongoDB and Node.js both employ JavaScript and JSON.

In today's scenarios, web developers need a platform which offers scalability and flexibility with storage needs. In general, MongoDB is one of the most foremost NoSQL schema-less databases which is highly used with node.js for the development of database applications. Through this blog, you can also evaluate Node.js interview questions and how traffic over websites can be controlled and maintained with the use of MongoDB database.

MongoDB is a schema-less database which perfectly fit for Node.js frameworks. It provides evolving and flexible data structures in web-based applications. If you want to excel in MongoDB

1. How To Install MongoDB

If you are starting from scratch, then you need to make a new folder with your terminal and run npm init to start a new node, then run:

npm install mongodb.

If you already use a package, then repeat the command; npm install MongoDB to install MongoDB.

2. How to connect to MongoDB

To connect MongoDB to Node.js, you need to have the package and then you'll get MongoClient object from it.

The command used is:

const mongo = require ('mongodb'). MongoClient

To get the reference to the MongoDB instance client, use mongo.connect ()

mongo.connect (url, (err, client) =>) {
if (err) {
  console.error (err)

3. How to Interact with MongoDB

There are several ways in which you can interact with MongoDB. Here are a few examples

1. Insert data into a collection a Document

collection.insertOne({title: 'Best Interview Question'}, (err, result) => {

2. Finding all documents

collection.find().toArray((err, items) => {

Why it is important to use MongoDB with Node.js

MongoDB database provides the functionality of document-based data storage just like NoSQL. Document-based data storage is the main aim of using a non-structured database like NoSQL. MongoDB is a distributed database which allows ad-hoc queries, real-time integration, and indexing efficient. Moreover, MongoDB is open-source and perfect for frequently changing data. It also offers server-side data validation.


As you can see in the blog, that setting up of Node.js server and connecting it to MongoDB database if remarkably simple as compared to another majority of technologies. Both these tools together offer a quick yet enormously flexible and highly scalable solution that is taking the server-side programming language world by storm. If you are looking more interview questions then you visit Best Interview Question