Backups must be restored and verified—I measured the conditions under which SQLite, PostgreSQL, and MySQL fail to restore and created a verification script

When judging whether a backup can be restored based solely on exit codes and integrity checks, I found conditions in SQLite, ...

17 Items to Check Before Upgrading to PostgreSQL 19—The One pg_upgrade --check Misses, and Inspection SQL (Measured on 18.6 and 19beta4)

The release notes for PostgreSQL 19 (scheduled for official release in October 2026) contain a section titled "Migration to Version 19," which lists 17 items that affect compatibility with previous ...