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, ...
Linux Journal

MariaDB/MySQL, PostgreSQL and SQLite3 - Comparing Command-Line Interfaces

Don't be afraid of using your chosen database's command-line client. I might as well say this up front: I don't like using GUI (aka non-command-line or graphical) tools with my databases. This is ...

What is a Database Index? An Illustrated Guide to How It Speeds Up Searches

What is a Database Index? An Illustrated Guide to How It Speeds Up Searches"My SQL searches suddenly became slow as the data ...