marcus-belz.de
The starting point for everything I do: data, databases, data quality, and a pencil. From there you get to DI², to this blog, and to the pictures of pencil ‘n more (German only): marcus-belz.de
pencil ‘n more
My creative site, showing drawings and pictures in pencil, watercolor, and oil. Hopefully I will find the time and muse to paint new ones: pencilnmore.marcus-belz.de
DI²
DI² generates maintainable, readable and auditable ETL processes in pure SQL, automatically from the metadata of your source system. Many articles on this blog grew out of the work on DI²: di2.marcus-belz.de/en
GitHub: di2-starter-kit
The companion repository to this blog: an open starter kit for AI-assisted SQL development with Claude Code, with a directory convention for Postgres schemas, SQL rules, and a deploy runner that works without a migration tool. It is based on the AI Coding Starter Kit by Alex Sprogis (see below). The background story is told in the article series AI-Assisted SQL Development with Claude Code.
To the repository: github.com/marcusbelz/di2-starter-kit
my son’s web site
And then there’s my son’s (not yet public) website, www.enno-belz.de.
Alex Sprogis — AI Coding Starter Kit
The di2-starter-kit linked above has an origin story: the free AI Coding Starter Kit by Alex Sprogis. Alex is a product engineer & content creator who shows on his website and YouTube channel how to build your own software ideas with AI — even without a developer background — with tutorials, tools, and frameworks around Claude Code. His kit was what got me started with Claude Code in the first place — and the foundation from which the DI² project and, in turn, the di2-starter-kit evolved. Thanks for the go-ahead, Alex!