To learn anything new, first, we should aware of WWH(What, Why, and How). (This is my POV😬)

WHAT IS MONGODB?

MongoDB is a source-available cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with optional schemas.

WHY MONGODB IS USED?

• It makes it easy for developers to share structured or unstructured data.
• It offers faster query processing but with an increased load and system.

HOW MONGODB WORKS?

• Instead of tables, a MongoDB database stores its data in a collection.
• Stores the data in BSON( Binary Javascript Object Notation) document format both Internally & over the network.

RDBMS - Relational Database Management System. Data save as a Relation/Table. MongoDB - OODM (Object Oriented Data Model). Data save as a JavaScript Object.