OpenSQL Camp is a conference of, by, and for the open-source database community of users and developers. It is a place where people come to learn, to participate and to contribute. In other words, it's a great conference, and if you attend, it will be better.
OpenSQL Camp is open to all – sessions have included PostgreSQL, SQLite, MySQL (and storage engines and forks thereof), Drizzle (and tools such as Google Proto Buffers), DBIx::Cache, Gearman, cloud computing, Unix tips, query optimization, Apache Derby, BlackRay, Continuent Tungsten, DB Clustering, Firebird, CouchDB, MongoDB, Cassandra, Firewater, how to version schemas, Waffle Grid / Storm Cloud, databases on SSDs, and even "soft" topics like the Open Database Alliance.