What are the different types of NoSQL databases, and how do they differ from each other?

  • Document-oriented, Key-value, Columnar, Graph
  • In-memory, Cache-based, Distributed, Indexed
  • Relational, Hierarchical, Wide-column, Time-series
  • Tabular, Spatial, Structured, Semi-structured
NoSQL databases come in various types, each designed for specific data handling needs. Document-oriented databases like MongoDB store data in flexible, JSON-like documents, while key-value stores like Redis use simple key-value pairs. Columnar databases such as Cassandra organize data in columns rather than rows. Graph databases like Neo4j focus on relationships between data entities. Understanding these differences helps in choosing the right database for specific use cases.
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