I'm not actually sure what a personal database is. If I'm writing software, I love SQLite, but I don't have any software developed truly for personal use, alth

I'm not actually sure what a personal database is. If I'm writing software, I love SQLite, but I don't have any software developed truly for personal use, although my automation server project does run a porch camera. But even in software it's not common that I need a DB, since I do a lot of embedded. Most software I write uses text, with an eye to version control and SyncThing sync. For personal information management I use Obsidian/Syncthing to take relatively unstructured notes, combined with Google assistant for reminders. Various bits of non critical data lives in assorted apps and clouds, like Garmin connect and Google location history. On the very rare occasion I have any personal use for managing structured data, I use Google Docs or LibreOffice Calc, but that doesn't come up a lot. More than what tools people use to manage data, I'm curious about the data itself. I always hear about programmers using Awk and sed, and all kinds of talk about processing data, but I'm not sure what people actually do with structured personal data.