Schema Change
Everything on SkillVeris tagged Schema Change — collected across the glossary, study notes, blog, and cheat sheets.
3 resources across 1 library
Interview Questions(3)
How Do You Design a Zero-Downtime Database Migration?
A zero-downtime database migration succeeds by decomposing a risky single cutover into small, reversible, backward-compatible steps — expand the schema, dual-w…
What Makes a Database Schema Change Backward-Compatible?
A backward-compatible schema change is one that old application code, already deployed and still running, can continue to read and write correctly after the ch…
How Do You Safely Run Database Migrations in a CI/CD Pipeline?
Safe database migrations in CI/CD rely on the expand-contract pattern: first deploy a backward-compatible schema change that both old and new application code…