Poll: What database does your company use?

Upvote please if you think it's an interesting question so that more people will respond

Last year I asked this question (http://news.ycombinator.com/item?id=1411937) and I think it was useful to a bunch of people. Figured it's worth asking again and the diffs will be interesting.

You should add the Neo4j (http://neo4j.org/) graph database to the list.

Graphs are a much more modern and elegant way of storing relational data. I've used Postgres for over 10 years, but it's not a graph database. With graph databases you don't have to mess with tables or joins -- everything is implicitly joined.

And Neo4j is ridiculously sweet -- store 32 billion nodes (http://blog.neo4j.org/2011/03/neo4j-13-abisko-lampa-m04-size...) with 2 million traversals per second (http://www.infoq.com/news/2010/02/neo4j-10), and you can use Gremlin with it (the graph traversal language), which let's you calculate PageRank in 2 lines.

Neo4j is open source, and the Community Edition is now free (https://github.com/neo4j/community).

I recommend pairing it with the TinkerPop stack (http://www.tinkerpop.com/).

Voted Oracle & Other (DB2)

At TransLoc, we use MySQL and have set up a cluster of four nodes, using streaming replication across two data centers. It is something that all of us were familiar with and it almost, sort of, kind of support GIS functions, which is something we need.