What is MongoDB and how is it different from SQL databases?

MongoDB is a NoSQL document-oriented database that stores data in flexible,

semi-structured documents rather than in rows and columns like SQL databases. Unlike

SQL databases, which rely on rigid schemas, MongoDB uses a schema-less approach

where each document can have different fields and structures.

Key differences:

• SQL Databases: Store data in tables with a fixed schema and use ACID

transactions for consistency.

• MongoDB: Uses a document model (e.g., JSON-like structures) and offers more

flexibility, scalability, and ease of replication but may sacrifice some consistency in

distributed environments.