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NoSQL (Not Only SQL) - movement established in early 2009, rapidly growing (some general informations about NoSQL)

How to differentiate between SQL and NoSQL? ACID vs BASE

Categories (according to NoSQL):

1. Column Families
2. Document Store
3. Key Value
4. Graph Databases
5. Object Databases
6. Multimodel Databases (?)
7. Multidimensional Databases (?)
8. Multivalue Databases (?)
9. Other

Column Families: Cassandra (Cassandra at Facebook, a bit out of date but good to take a look at) ; BigTable (BigTable at Google) ; HBase ; Hypertbale