The best NoSQL database options for the enterprise

NoSQL databases have become a popular alternative to established database management systems

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NoSQL databases are growing in popularity, as developers search for scalable and flexible storage that can handle the proliferation of unstructured data and increasingly complex web applications. According to Allied Market Research, the NoSQL market is expected to hit $4.2 billion (£3.1 billion) globally by 2020.

The term NoSQL was coined by Italian computer scientist Carlo Strozzi in 1998 to describe a lightweight relational database he was developing without a SQL interface. 

SQL databases retain the bulk of the market, and industry giants Oracle, Microsoft and IBM still dominate the landscape, but a range of NoSQL alternatives have emerged to challenge the established vendors. Here's our pick of the best, in no particular order.

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