The NoSQL databases

The NoSQL databases are affected by the CAP theorem, also known as Brewer's theorem. In 2002, S. Gilbert and N. Lynch published a formal proof of the CAP theorem in their article, Brewer's conjecture and the feasibility of consistent, available, partition-tolerant web services. In 2009, the NoSQL movement began. Currently, there are over 150 NoSQL databases (nosql-database.org).