Databaseline is a blog about data, technology, software engineering and architecture, and the music industry by Ian Hellström.

Ian Hellström currently works as a data engineer at Spotify in Gothenburg, Sweden. He has been a data engineer, data warehouse developer, business intelligence consultant, and researcher for various companies and academic institutions within Europe.

On oracle.rtfd.io Ian has launched an initiative for developers to learn more about SQL and PL/SQL optimization techniques for Oracle Database.

Please note that all opinions expressed here or elsewhere are those of the author and they do not necessarily represent the sentiments or opinions of any employer, client, or colleague.


Databaseline’s new home since Spring 2017 is Bitbucket rather than Wordpress.com. All posts originally published on Wordpress.com have been migrated here. The rationale for the migration was to increase convenience and control when writing, and decrease network traffic when reading. This means that there are no ads, no integrated website analytics, no plug-ins, and no discussion forums. Just content. As it should be.

Because your activity on Databaseline is not tracked at all, Databaseline is fully compliant with the GDPR and ePR by default.


If you have anything to say, the best way to get in contact is via LinkedIn or the issue tracker in case you discover inaccuracies or typographical errors.