On 04/17/2016 10:57 PM, Tsunakawa, Takayuki wrote:
> On the other hand, there is a gulf between the two top popular databases -- Oracle and MySQL -- and PostgreSQL. They
arenearly five times more popular than PostgreSQL.
>
> DB-Engines Ranking
> http://db-engines.com/en/ranking
>
> Yes, I understand this ranking doesn't necessarily reflect the actual use, but I also don't think the ranking is far
fromthe real popularity
I've been over how DBEngines calculates their numbers. That's a correct
assesment; the ranking is more-or-less correct, the numbers are not.
Partly it's because a lot of the metrics they use focus on retrograde
trends (i.e. what has been popular already for several years) and partly
because of stupid things like not counting "Postgres" or "EnterpriseDB".
Based on my own numbers, MySQL's popularity index (installed base and
people) is still 2X to 3X ours.
Difference is, PostgreSQL adoption is growing whereas MySQL is not.
MariaDB could change that, though; they're picking up a lot of interest.
--
--
Josh Berkus
Red Hat OSAS
(any opinions are my own)