@prompt2db: Healthcare scheduling apps fail at the database level long before they fail at the code level. Most devs design the "appointments" table first and patch everything else around it. Wrong order. Swipe through the actual schema: patients, doctors, availability_slots, appointments, medical_records — and the one index your "today's schedule" query can't live without. Save this before you build your next booking system. #PostgreSQL #DatabaseDesign #BackendDevelopment #SoftwareEngineering #SystemDesign