Could you briefly introduce yourself?

I'm David Fetter.

I've worked in various commercial enterprises, non-profits and educational institutions. I am an PostgreSQL contributor, and have worked extensively with varied tools on transaction processing and analytics systems. Together with a small, intrepid group of others, I have helped found and grow user groups including the San Francisco PostgreSQL Users' Group.

I am always looking for ways to make the PostgreSQL-verse better.

Have you enjoyed previous pgconf.eu or FOSDEM conferences, either as attendee or as speaker?

Very much so. Both venues have provided, in addition to a rich hall track, excellent formal programs.

What will your talk be about, exactly? Why this topic?

My talk is about a system to log DML changes in a way that makes them easy to query called changelog_trigger. I was motivated to do this talk by the fact that this software solves a problems I encountered over and over in my professional career in a clean and practical way.

What is the audience for your talk?

Anyone who has ever wondered what went on in a database after a transaction is committed.

What existing knowledge should the attendee have?

They should know what a database is, and what regret is. Apart from that, some idea of what data serialization (JSON, e.g.) is good for can help, as can a basic knowledge of what triggers are.