https://blog.lgcode.me/tags/data-modelling/ Recent content in Data-Modelling on lgcode Hugo en-us Wed, 19 Aug 2026 09:00:00 -0300 https://blog.lgcode.me/posts/zero-is-not-unset/ Wed, 19 Aug 2026 09:00:00 -0300 https://blog.lgcode.me/posts/zero-is-not-unset/ A form field prepopulated with 0 silently shadowed every rate below it in an inheritance chain. The bug wasn't the zero — it was that the chain had no way to distinguish "the answer is zero" from "I have no answer".