MongoDB

MongoDB is a source-available cross-platform document-oriented database program. Classified as a NoSQL database, MongoDB uses JSON-like documents with optional schemas.

What is MongoDB?

MongoDB is built for scalability, performance, and high availability, scaling from single server deployments to large, complex multi-site architectures. By leveraging in-memory computing, MongoDB provides high performance for both reads and writes.

Key Features

  • Document-Oriented: Stores data in flexible, JSON-like documents (BSON).
  • Dynamic Schemas: Allows you to create documents without predefined structures.
  • Horizontal Scalability: Sharding allows for distributing data across multiple servers.
  • High Availability: Replica sets provide automatic failover and data redundancy.
  • Indexing: Support for secondary indexes, including geospatial and text search.

Typical Use Cases

MongoDB is ideal for big data applications, content management, real-time analytics, and mobile applications where data structures evolve rapidly. It is a key component of the MEAN and MERN stacks.

Beyond Relational

While NoSQL is powerful, SQL remains the language of data for many applications.

Explore SQL Reference