A NoSQL database is a type of database designed to store, retrieve, and manage unstructured, semi-structured, or structured data in a non-tabular format, unlike traditional relational databases (SQL databases) that use tables with rows and columns.
Key Features of NoSQL Databases:
- Schema-less: No fixed schema, allowing flexible data models.
 - Scalability: Horizontally scalable (distributed across servers).
 - High Performance: Optimized for fast read/write operations.
 - Distributed Architecture: Supports large-scale distributed data.
 - Variety of Data Models: Supports documents, key-value pairs, graphs, and columnar storage.
 
NoSQL is suited for::
- ✔ Big Data & Real-Time Apps (e.g., social media, IoT)
 - ✔ Flexible & Evolving Data Models
 - ✔ High Scalability & Performance Needs
 - ✔ Distributed Cloud-Based Systems