Database design is, unfortunately, a lost art. Up through the early 2010's I remember having design reviews for database schemas, etc. That isn't "agile"... so

Database design is, unfortunately, a lost art. Up through the early 2010's I remember having design reviews for database schemas, etc. That isn't "agile"... so you just fix it in the next sprint, as you explain to someone what a unique constraint is and why a table is now full of duplicates.