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, ...

Preventing Overwrites: SQLite Version Columns and Conflict Resolution Workbook

In a small management tool, two people open the same memo. One person saves their edits, and the other saves from an older screen a little later. Even if both see a "Saved" message, the first person's ...