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MongoDB - Getting StartedMongoDB - Getting Started1
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  1. 1MongoDB Course Index

Module 1: Introduction and SetupModule 1: Introduction and Setup6
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  1. 1What is MongoDB? (NoSQL vs SQL)
  2. 2MongoDB Use-cases and Features Overview
  3. 3Installing MongoDB on Windows
  4. 4Installing MongoDB on Linux
  5. 5Installing MongoDB on Mac
  6. 6Introduction to MongoDB Atlas (Cloud)

Module 2: MongoDB BasicsModule 2: MongoDB Basics6
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  1. 1Understanding Databases, Collections, and Documents in MongoDB
  2. 2JSON vs BSON in MongoDB
  3. 3MongoDB Data Types
  4. 4Creating a Database and Collection in MongoDB
  5. 5Using MongoDB Compass
  6. 6Using MongoDB Shell

Module 3: CRUD OperationsModule 3: CRUD Operations6
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  1. 1Insert Operations in MongoDB
  2. 2Read Operations in MongoDB
  3. 3Query Filtering with Operators
  4. 4Update Operations in MongoDB
  5. 5Delete Operations in MongoDB
  6. 6Using Projection and Sorting in Queries

Module 4: Advanced QueryingModule 4: Advanced Querying4
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  1. 1MongoDB Query Operators Overview
  2. 2Working with Arrays and Embedded Documents in MongoDB
  3. 3Querying Nested Fields in MongoDB
  4. 4Pagination using limit(), skip(), and sort() in MongoDB

Module 5: Indexing and PerformanceModule 5: Indexing and Performance4
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  1. 1What are Indexes and Why Use Them
  2. 2Creating Single Field and Compound Indexes in MongoDB
  3. 3Multikey Indexes for Arrays
  4. 4Using explain() for Query Optimization in MongoDB

Module 6: Aggregation FrameworkModule 6: Aggregation Framework5
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  1. 1Introduction to Aggregation
  2. 2Using $match, $group, $project, $sort in MongoDB Aggregation
  3. 3Aggregation Pipeline Stages Explained
  4. 4Common Use Cases: Grouping, Counting, Summing
  5. 5MapReduce vs Aggregation Framework in MongoDB

Module 7: Schema Design & ValidationModule 7: Schema Design & Validation4
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  1. 1Schema Design Patterns: Embedding vs Referencing
  2. 2One-to-One, One-to-Many, Many-to-Many Relationships in MongoDB
  3. 3MongoDB Schema Validation with JSON Schema
  4. 4Defining Custom Validation Rules in MongoDB

Module 8: Working with MongoDB in CodeModule 8: Working with MongoDB in Code2
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  1. 1MongoDB with Python using PyMongo
  2. 2MongoDB with Node.js using Mongoose

Module 9: MongoDB Atlas (Cloud)Module 9: MongoDB Atlas (Cloud)3
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  1. 1Setting Up a Free MongoDB Atlas Cluster
  2. 2Creating and Managing Databases in Atlas
  3. 3Connecting MongoDB Atlas to Local Applications

Module 10: Backup, Restore and SecurityModule 10: Backup, Restore and Security5
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  1. 1Backing Up MongoDB using mongodump
  2. 2Restoring Data using mongorestore
  3. 3Creating Users and Assigning Roles in MongoDB
  4. 4Role-Based Access Control and Authentication
  5. 5Basic MongoDB Security Best Practices

Module 11: Real-World ProjectsModule 11: Real-World Projects3
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  1. 1Project 1: Task Tracker with Node.js + MongoDB
  2. 2Project 2: Blog App with Express + Mongoose
  3. 3Project 3: Inventory System (Console-based App)

Installing MongoDB on Linux

Installing MongoDB on Linux

MongoDB can be installed on various Linux distributions like Ubuntu, Debian, CentOS, or RHEL. In this guide, we will walk through installing MongoDB Community Edition on Ubuntu (20.04 or 22.04), the most popular Linux distribution for developers.

Step 1: Import the MongoDB public GPG key

This key ensures that the software you're installing is trusted and verified.


    curl -fsSL https://pgp.mongodb.com/server-7.0.asc | \
      sudo gpg -o /usr/share/keyrings/mongodb-server-7.0.gpg \
      --dearmor

Explanation: This command downloads the MongoDB GPG key and saves it to your system keyring securely.

Step 2: Add the MongoDB repository


    echo "deb [ signed-by=/usr/share/keyrings/mongodb-server-7.0.gpg ] \
      https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/7.0 multiverse" | \
      sudo tee /etc/apt/sources.list.d/mongodb-org-7.0.list

Explanation: This adds the official MongoDB 7.0 repository to your system so you can install it using apt.

Step 3: Update your system package list


    sudo apt update

Output:

    Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
    Get:2 https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/7.0 ...
    Reading package lists... Done

Explanation: This refreshes your package index to include the newly added MongoDB repository.

Step 4: Install MongoDB


    sudo apt install -y mongodb-org

Output:

    Reading package lists... Done
    ...
    Setting up mongodb-org-server ...
    Setting up mongodb-org-mongos ...

Explanation: This installs the MongoDB server, client tools, and the shell on your Linux machine.

Step 5: Start the MongoDB service


    sudo systemctl start mongod

Explanation: This command starts the MongoDB background service so it's ready to accept connections.

Step 6: Enable MongoDB to start on system boot


    sudo systemctl enable mongod

Explanation: This makes sure MongoDB automatically starts every time your system boots.

Step 7: Check MongoDB status


    sudo systemctl status mongod

Output:

    ● mongod.service - MongoDB Database Server
       Loaded: loaded (/lib/systemd/system/mongod.service; enabled)
       Active: active (running) since ...

Explanation: You should see that MongoDB is active and running. If you ever need to troubleshoot issues, this is the first check.

Step 8: Access the MongoDB shell


    mongosh

Output:

    Current Mongosh Log ID: ...
    Using MongoDB: 7.0.0
    test>

Explanation: The mongosh is MongoDB's interactive shell where you can run commands and interact with your database in real-time.

Intuition Check

Q: What if I close my terminal — will MongoDB stop working?

A: No! Because it's running as a background service managed by systemd. It's detached from your session.

Uninstall MongoDB (Optional)

If you ever want to uninstall MongoDB completely:


    sudo systemctl stop mongod
    sudo apt purge mongodb-org*
    sudo rm -r /var/log/mongodb
    sudo rm -r /var/lib/mongodb

Explanation: This stops the service, removes all packages, logs, and database files from your system.

Summary

You’ve now successfully installed MongoDB on Linux! From adding the GPG key to starting the service, you’ve prepared your system to use MongoDB both locally and in future development projects.

Next Step

In the next topic, we will explore MongoDB tools like Compass (GUI) and the shell so you can interact with your database visually and through code.

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