Greeting all,
If you are coming from the relational database world and now you’ve decided to dip your toe into the wonderful world of NoSQL databases, and you’re exploring MongoDB then here is an amazing article written by Lauren Schaefer.
Mapping Terms and Concepts from SQL to MongoDB
Also, take a look at our brand new course MongoDB for SQL pros
Happy Learning 
Thanks,
Shubham Ranjan
Curriculum Services Engineer