I finished setting up an Industrial-Strength Django website on my current favorite hosting site, Digital Ocean, and said what the heck, let’s go ahead and make it the real aufrecht.
(See update at bottom for better news.) After the temperature in the office started fluctuating mysteriously, I impulsively bought the Blue Maestro Tempo Bluetooth thermometer.
Hat #36. For some reason this pattern never totally stuck in my head, so I was always going back to my little slip of paper, and when I did think I mastered it, I screwed up one of the cabling rows (don't look too closely at the top third).
You interact with data models all day long. Most of the things you do on the internet, certainly anything transactional like buying something or making a reservation or taking a survey, involves a database-backed website.