I am almost close to settling with MySQL over PostgreSQL (over the reasons I wrote on my blog here).
Too small things bother me here:
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It’s often said that MySQL is the most used RDBMS, among those that are available for free (alongside PostgreSQL, Firebird etc). And in order to support their stance on MySQL, many refer to Facebook, Twitter, Flickr, Wikipedia, YouTube etc using MySQL. One thing is not clear. Are they referring to the freely downloadable MySQL or the paid enterprise version (known as “Oracle MySQL”)?
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According to Wikipedia, under pressure from open source software advocates,
"As part of the negotiations with the European Commission, Oracle committed that MySQL server will continue to use the dual-licensing strategy long used by MySQL AB with commercial and GPL versions available **until at least 2015**."No one seems to be worried as to what happens after that?
Well, the advantages of the paid version are mostly support and accountability. Most (especially large) companies like to be able to point fingers to someone when things blow up.