MongoDB Tutorial

MongoDB Getting Started

Introduction to MongoDB

MongoDB is a NoSQL database that stores data in flexible, JSON-like documents. It is widely used for its scalability, flexibility, and ease of use.

Installing MongoDB

To get started with MongoDB, you first need to install it on your system. Follow these steps:

Download MongoDB from the official website.
Install MongoDB according to your operating system.
Set up the MongoDB environment variables, if required.

Starting MongoDB Server

Once installed, you can start the MongoDB server:

Example: Starting MongoDB

mongod

This command starts the MongoDB server.

Connecting to MongoDB

Next, connect to MongoDB using the MongoDB shell or a MongoDB client:

Example: Connecting to MongoDB

mongo

This command connects to the local MongoDB server using the MongoDB shell.

Creating a Database

To create a database in MongoDB, use the use command:

Example: Creating a Database

use mydatabase

This command creates a new database named “mydatabase”.

Creating Collections

Inside a MongoDB database, data is stored in collections. You can create a collection using the db.createCollection() method:

Example: Creating a Collection

db.createCollection("users")

This command creates a new collection named “users”.

Basic CRUD Operations

Perform basic CRUD operations (Create, Read, Update, Delete) using MongoDB:

Create: db.collection.insertOne(), db.collection.insertMany()
Read: db.collection.find(), db.collection.findOne()
Update: db.collection.updateOne(), db.collection.updateMany()
Delete: db.collection.deleteOne(), db.collection.deleteMany()

Conclusion

Congratulations! You’ve learned the basics of MongoDB, including installation, starting the server, connecting to MongoDB, creating databases and collections, and performing basic CRUD operations. This knowledge will help you get started with building applications using MongoDB.