NoSQL

Data is stored in a format other than relational tables in this non-relational databases. Data must be stored in a specific structure and format so that it can be retrieved by users whenever needed. However, sometimes their schemas are flexible when data is not presented in a structured layout.

NoSQL databases are frequently used in big data and real-time web applications due to their high scalability and high availability. It is generally used by developers as they can naturally lend themselves to the agile development paradigm by quickly adapting to changing requirements. 

The data to be stored intuitively with NoSQL databases as fewer transformations are needed when storing or retrieving data using NoSQL-style application programming interfaces (APIs). The cloud can also be fully utilized by NoSQL databases to guarantee zero downtime.

Dynamic schema, Document-based data model, Horizontal scalability, Key-value data model, Column-based data model, Distributed and high availability and Performance are features of NoSQL databases.

Document databases, Key-value stores, Column-oriented databases and Graph databases are various types of NoSQL databases that help companies deal with massive data volumes.