IntroductionIn the world of SQL, truth values are not just true and false, but three: true, false, and unknown. I have been an engineer for over three years and never knew this, but it seems to be ...

When working as an engineer, you will surprisingly often have opportunities to interact with databases. From application ...

Coding games have a credibility problem. Some are genuinely useful learning tools. Others place programming words over an ordinary puzzle, award a few ...

A practical guide to how databases work, covering schema design, SQL, indexing, transactions, concurrency, caching, pagination, and database selection.