SQL SQUARED: simplifying the schema of things
A UK data and AI podcast and community, plus Echelon, the campaign tracker for Warhammer 40,000 Crusade.
Featured project
ECHELONYou write the story. Echelon does the rules maths.
Echelon is a free web and mobile tool for running Warhammer 40,000 Crusade campaigns in 10th or 11th Edition. Track rosters, battles and Crusade Cards, and keep your whole group in sync, on the phone in your hand or the laptop back home.
- Rules maths handled for you
- Organisers stay in control of the story
- One invite link for the whole group
Free forever tier · No card needed · Phone, tablet and desktop
Follow Echelon on Instagram and YouTube, @echeloncrusade
Unofficial fan tool, not affiliated with Games Workshop.
The campaign overview, on desktop and phone
The podcast
The sql_squared podcast
A technical podcast from the sql_squared community, hosted by David Morgan-Gumm.
Earlier episodes
Episode 12 · 9 June 2026
Evolution of Database Infrastructure & Chaos Engineering w/ Andrew Pruski
Episode 10 · 1 December 2025
GitHub Universe: the future of agentic development w/ Sergio Sisternes
Episode 9 · 16 November 2025
The Future of Data & Building Inclusive Tech Communities w/ James Reeves
The blogs
Fresh from the blogs
About me
Engineering the future of data.
- I turn messy data into clean decisions
- I engineer platforms built to last
- I scale teams, systems and communities
I'm David Morgan-Gumm, a data and AI engineer, the founder of sql_squared and the builder of Echelon. My projects, career journey and community work all live on my portfolio site.
Speak, be a guest, or just say hello
We run events for data and AI professionals and we're always looking for new speakers and podcast guests. Tell us what you'd like to talk about.