NoSQL involves a variety of different database technologies which were
developed to meet the demands presented in building modern applications.
It provides a mechanism for storage and data retrieval.
NoSQL has become the first alternative to relational databases, with scalability, availability, and fault tolerance being key deciding factors.
There are four main types of NoSQL databases including, graph database, key-value store, column store and document database each with their own specific attributes. NoSQL databases are focused on particular classes of problems including, being more flexible about stored data, targeting use cases like relationships and aggregating data or just simplifying the idea of a database down to something that stores a value.
NoSQL is beneficial for anyone working with DevOps, and those within the IT industry.