Introduction to MongoDB

What is MongoDB?

MongoDB is a NoSQL database that stores data in a flexible, JSON-like format called BSON (Binary JSON). It is designed for high performance, high availability, and easy scalability.

Key Features:

• Document-Oriented: Stores data in documents (similar to JSON).
• Schema-Free: No fixed schema; documents in a collection can have different structures.
• Horizontal Scalability: Easily scales out by adding more servers.

Differences between SQL and NoSQL

• SQL Databases:
  • Schema: Fixed schema with predefined tables and columns.
  • Data Model: Table-based with rows and columns.
  • Scalability: Typically scales vertically (upgrading hardware).
• NoSQL Databases:
  • Schema: Flexible schema with dynamic data structures.
  • Data Model: Document, key-value, column-family, or graph-based.
  • Scalability: Generally scales horizontally (adding more servers).