Online Course Overview

Learn MongoDB

Learn MongoDB online through our comprehensive course. The most popular NoSQL database for modern web applications.

60 Lessons in 20 Sections

Beginner → Intermediate

Start Learning Open Workspace

Curriculum

01MongoDB Fundamentals

What is MongoDB?

This returns the current MongoDB version, verifying your connection.

What is NoSQL?

NoSQL databases scale easily and don't enforce strict schemas.

SQL vs NoSQL

MongoDB stores JSON-like documents instead of rows and columns.

Document Databases

Data is stored in independent documents.

Collections and Documents

A collection is like a table, a document is like a row.

JSON vs BSON

MongoDB stores data internally as BSON (Binary JSON), which includes additional types like Date and ObjectId.

02MongoDB Data Model

BSON Data Types

MongoDB supports many data types natively.

Understanding ObjectId

Every document requires an _id. ObjectId is the default generator.

Embedded Documents

You can nest objects inside objects.

Arrays in MongoDB

Store lists of data in arrays.

03MongoDB CRUD

insertOne()

Insert a single document into a collection.

insertMany()

Insert multiple documents efficiently.

findOne()

Finds the first document matching the query.

find()

Finds all documents matching the query and returns a cursor.

Projection

Specify which fields to return (1) or exclude (0).

Sort, Limit, and Skip

Used for pagination and ordering.

updateOne()

Updates the first matching document.

updateMany()

Updates all matching documents.

replaceOne()

Completely replaces the document, keeping the same _id.

deleteOne()

Deletes the first matching document.

deleteMany()

Deletes all matching documents.

04Query Operators

Comparison Operators ($eq, $gt, $lt)

Query numerical and date ranges.

$in and $nin

Match any value in an array.

Logical Operators ($and, $or)

Combine multiple query conditions.

$exists and $type

Query documents based on field existence or BSON type.

$regex

Perform pattern matching (like SQL LIKE).

05Arrays

Querying Arrays

Match if the array contains the value.

$all Operator

Match documents where array contains all specified values.

$elemMatch

Match array elements satisfying multiple conditions.

06Updating Documents

$set and $unset

Add/modify fields or remove them entirely.

$inc and $mul

Increment or multiply numeric values atomically.

Array Update Operators ($push, $pull)

Modify arrays by adding or removing elements.

07MongoDB Data Modeling

Embedding vs Referencing

Choose embedding for data accessed together, referencing for large unbounded data.

One-to-Many Relationships

Model relationships practically based on access patterns.

Denormalization

Duplicate data to improve read performance.

08MongoDB Aggregation

Aggregation Framework

Process data records and return computed results via a pipeline.

$match and $project

Filter and shape data in the pipeline.

$group and $sum

Group documents by a key and calculate aggregates.

$lookup (Joins)

Perform a left outer join to an unsharded collection.

$unwind

Deconstruct an array field into multiple documents.

09Indexes & Performance

Why Indexes Matter

Indexes make queries extremely fast by preventing collection scans.

Compound Indexes

Index multiple fields together for complex queries.

Unique Indexes

Enforce uniqueness for fields like email.

explain()

Analyze query performance and index usage.

10MongoDB Security Fundamentals

Security Fundamentals

Always use environment variables for connection strings.

Authentication and Users

Create specific database users with least privilege.

11MongoDB Atlas

MongoDB Atlas

Atlas is MongoDB's managed cloud database service.

Network Access

Restrict database access to specific IP addresses (e.g. your backend server).

12MongoDB with Node.js

MongoDB Node.js Driver

Connect a Node.js backend to your database.

CRUD in Node.js

Execute MongoDB commands natively in JavaScript.

13MongoDB with Express.js

MongoDB with Express.js

Build REST APIs by exposing MongoDB data via Express.

Request Validation

Validate HTTP requests before querying MongoDB.

14MongoDB with React

MongoDB with React

React fetches data from the Express API, which queries MongoDB.

15MongoDB with PHP

MongoDB with PHP

Connect to MongoDB using the official PHP library.

16MongoDB + Full-Stack Architecture

Full-Stack Architecture

Data flows securely from the frontend to the backend API, and into the database.

17MongoDB + REST API Concepts

REST API Concepts

Map HTTP verbs (GET, POST, PUT, DELETE) to database CRUD operations.

18MongoDB Transactions

Transactions

Ensure multiple operations succeed or fail together.

19Advanced MongoDB Concepts

Change Streams

Listen for real-time changes in your database.

Schema Validation

Enforce structural rules on your MongoDB documents.

20Web Development Projects

E-commerce Project Architecture

Practical data modeling for real-world projects.

Explore the MongoDB Ecosystem

Continue learning MongoDB

Access all MongoDB lessons and tutorials.

Practice MongoDB exercises

Apply your knowledge with interactive coding challenges.

Test your knowledge with MongoDB quizzes

Check your understanding with multiple-choice questions.

Browse the MongoDB reference

Quickly look up syntax, methods, and properties.