A practical method for reviewing a database migration for risk before it ships: recognizing destructive operations, catching lock risk on large tables, verifying a backfill is batched, throttled and idempotent, and spotting hidden permission grants and the quiet data exposure a schema change can introduce. The course closes with a full worked review of a realistic migration carrying several of these problems at once, rewritten into a safer, staged alternative.
Nothing. Every course, exam, and certificate on the catalog is free — including retakes. All you need is a free Safeguard account.
None. The flagship course, Safeguard Certified Practitioner, is a beginner-level course — basic familiarity with how software is built helps, but every exam question is answerable from the lessons themselves.
You can retake it after a 24-hour cooldown, as many times as you need. Retakes are free, and each attempt draws a fresh random set of questions.
The Safeguard Certified Practitioner credential is valid for 24 months from issue. The expiry date is printed on the certificate and shown live on its public verification page. Renewing means passing the current exam again.
