Schema Design & Migrations

Normal forms and denormalization, precomputed aggregates, soft deletes, online schema changes, and backfills.

0 / 5 solved

Question Tags Difficulty Success

expand-contract-migrationzero-downtime-migration +1

Easy —

denormalizationprecomputed-aggregates +1

Medium —

create-index-concurrentlymigrations +2

Medium —

dual-writeoutbox-pattern +1

Hard —

online-schema-changealter-table +2

Hard —

5 of 5 questions here are still unsolved.