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DB-Engines Ranking now covers 256 database management systems
New systems in the ranking
The most popular of the new systems is Datomic, a transactional, distributed database at rank 79.
We also keep including very mature systems such as SQLBase at rank 89 and Oracle Rdb at rank 93. Sometimes, we are surprised that these systems, which many would call legacy systems, still have noticeable relevance today, and even appear in new job openings now and then.
MongoDB now at rank 4.
The most important change in the ranking is the rise of MongoDB to rank 4, changing positions with PostgreSQL, although PostgreSQL also significantly increased their score and actually reached their highest score ever.
That was a exciting start into 2015. Let's see what the rest of the year will bring.
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