MongoDB

MongoDB is a document-oriented NoSQL database designed for scalability and flexibility with JSON-like documents.

What is MongoDB?

MongoDB is a document-oriented NoSQL database that stores data in flexible, JSON-like documents called BSON (Binary JSON). It's designed for scalability and developer productivity with dynamic schemas.

MongoDB Concepts

Document: JSON-like data record
Collection: Group of documents
Database: Container for collections
Field: Key-value pair in document
Index: Performance optimization
Replica Set: High availability configuration

MongoDB Features

Flexible schema, horizontal scaling (sharding), aggregation framework, and rich query language.

Common Misconceptions

"MongoDB doesn't support ACID" - Supports multi-document transactions
"MongoDB is always faster" - Depends on use case
"Schema-less means no structure" - Schema validation available