Mongo DB

MongoDB is a NoSQL document-based database that stores data in JSON-like format (BSON). Instead of tables and rows like SQL, MongoDB uses collections and documents.

It’s flexible, scalable, and perfect for modern web apps, especially those using JavaScript or Node.js.

MongoDB is schema-less, meaning you don’t need to define the structure of your data upfront — great for fast development.

Key Concepts

  • Database → like a schema in SQL

  • Collection → like a table

  • Document → like a row (stored in JSON format)

  • _id → unique identifier for each document

  • Uses BSON (binary JSON) internally

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