NoSQL

NoSQL (Non-SQL) is a type of database management system that does not rely on a fixed schema and does not use SQL as the primary means of querying the data. It is designed for handling large amounts of unstructured and semi-structured data, and for scaling horizontally to support high-performance, high-availability workloads. NoSQL databases come in a variety of forms, such as document databases, key-value stores, graph databases, and column-family stores. Popular examples include MongoDB, Redis, CouchDB and Amazon DynamoDB.