Rolf Aabotsvik
More ideas from Rolf
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NoSQL Database Developed in to deal with limitations of SQL databases, concerning scale, replication and unstructured data storage.

So many times I have been asked for help with a query, where the questoin really comes down to the understanding of the difference between INNER and LEFT or RIGHT JOINs. I created this poster a few years ago and…Read more ›

So many times I have been asked for help with a query, where the questoin really comes down to the understanding of the difference between INNER and LEFT or RIGHT JOINs. I created this poster a few years ago and…Read more ›