Learn MongoDB basics, CRUD, querying, data modeling, indexing, and aggregation through hands-on practice, no advanced programming required.

Become a MERN Stack Developer

In this module, you'll dive into MongoDB, the document-oriented, NoSQL database that powers the MERN stack. You’ll explore how its flexible schema design supports rapid iteration and scalability for modern web applications.

Starting with core concepts like databases, collections, and documents, you'll learn to perform CRUD operations efficiently using practical, real-world examples. As you progress, you'll master advanced querying with filters, projections, and operators to extract meaningful insights from your data.

The module also covers key performance techniques, including index optimization and schema design best practices. You'll gain hands-on experience with the aggregation framework for data analysis, and learn to manage your data using import/export tools and backup strategies, skills critical for building and maintaining production-grade MERN applications.

MongoDB Essentials for MERN Stack Development

**(True or False)** The `mongoexport` tool can export data from a MongoDB collection to both JSON and CSV formats.

(True or False) The <code>mongoexport</code> tool can export data from a MongoDB collection to both JSON and CSV formats.

```javascript
mongodump --db ecommerce --out /backups/ecommerce-backup
```

```javascript
mongoexport --db ecommerce --out /backups/ecommerce-backup
```

```javascript
mongorestore --db ecommerce --out /backups/ecommerce-backup
```

```javascript
mongoimport --db ecommerce --out /backups/ecommerce-backup
```

 Which command will create a backup of the entire `ecommerce` database in the `/backups/ecommerce-backup` directory?

Which command will create a backup of the entire <code>ecommerce</code> database in the <code>/backups/ecommerce-backup</code> directory?

Backups should be stored in a secure location.

Backups can be restored using `mongorestore`.

**(Select all that apply.)** Which statement about backups in MongoDB is true? 

(Select all that apply.) Which statement about backups in MongoDB is true?

It will export all fields from the users collection to a CSV file.

It will export only the name and email fields from the users collection to a CSV file.

It will import data into the users collection from a CSV file.

It will create a backup of the users collection.

What will happen if you run the following command?

```javascript
mongoexport --db ecommerce --collection users --type=csv --fields name,email --out users.csv
```

What will happen if you run the following command?
<pre><code class="language-javascript">mongoexport --db ecommerce --collection users --type=csv --fields name,email --out users.csv
</code></pre>

Introduction and Fundamentals

Basic CRUD Operations

Advanced CRUD Operations

Aggregation Framework

Indexing for Performance

Data Modeling and Validation

Importing, Exporting, and Backup

Appendix

Conclusion

Quiz: Importing, Exporting, and Backup