Video: Seven databases defined in one song

It's informative and catchy!

Wih so many database options out there, it's easy to forget which one does what. Fortunately, there's this video, which provides a snappy rundown of the key points of PostgreSQL, Riak, HBase, MongoDB, CouchDB, Neo4J, and Redis.

Full disclosure: This video is actually a plug for a book. But you don't have to buy the book to enjoy the tune.

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