What is a NoSQL Database?

Get a brief introduction to a NoSQL database.

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A NoSQL database is different than a relational database. A NoSQL database does not store data in the form of tables, maintain relationships, or support features like ACID properties transactions. MongoDB database started supporting transactions only from version 4.0. NoSQL databases store data in the form of JavaScript Object Notation (JSON), key-value, wide-column, and graphs.

Benefits of NoSQL database

The benefits of NoSQL databases are listed below:

  • They do not have a predefined schema, so it supports addition and removal of a field, dynamically.
  • They can easily store unstructured data. Queries in NoSQL databases can be faster than queries in SQL databases.
  • It’s easier to use a NoSQL database than a relational database, as it provides great flexibility in frequently changing environments.
  • They support horizontal scaling.

Some popular examples of NoSQL databases are MongoDB, Redis, DynamoDB, Cassandra, HBase, and Neo4j.

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