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Organizing Items and Categories in SQL: A Practical Guide to Aggregated Category Names

Organizing Items and Categories in SQL: A Practical Guide to Aggregated Category Names

Relational databases often model situations where a single item can belong to multiple groups, categories, tags, or folders. Presenting this data cleanly — especially when you want to show all categories in one column — requires a thoughtful SQL strategy. This article explains how to build such a query, why it works,

Understanding the Cron Expression */10 * * * *: A Practical Guide for Developers and System Administrators

Understanding the Cron Expression /10 * * *: A Practical Guide for Developers and System Administrators

Scheduling tasks is a fundamental part of system automation. Whether you're running backups, refreshing caches, syncing data, or triggering routine jobs in your applications, cron remains one of the most reliable tools available on Unix-like systems. One expression that appears often is: */10 * * * * At first glance it looks

The Best Investment Is in Yourself — Valuing Knowledge, Mentors, and the Learning Journey

The Best Investment Is in Yourself — Valuing Knowledge, Mentors, and the Learning Journey

In a fast-moving world, there’s one kind of investment that never fails: investing in yourself. Not through stocks, property, or crypto, but through knowledge, experience, and personal growth. Sadly, many still underestimate this. Yet as the old saying goes, “Knowledge is light, and without light, we walk in darkness.

Welcome to API Hell: The Seven Deadly Sins (and a Few More) of Bad API Design

Welcome to API Hell: The Seven Deadly Sins (and a Few More) of Bad API Design

Building an API is a craft — part engineering, part empathy. It’s not just about making data accessible, but making it predictable, secure, and pleasant to use. Yet, so many developers unknowingly create what can only be described as API Hell. If your API commits any of the following sins,

The Illusion of Spec-Driven Mastery — Why Strong Fundamentals Still Win in the Age of AI

The Illusion of Spec-Driven Mastery — Why Strong Fundamentals Still Win in the Age of AI

In the current era of AI, technology evolves faster than ever. Every few months, a new framework, SDK, or specification emerges, promising to make development easier, faster, and smarter. Many believe that “spec-driven skills” — the ability to quickly learn and apply what’s written in documentation — are all that matter

The Complete Guide to Perpetual Software Licenses: What They Are, How They Work, and When They Make Sense

The Complete Guide to Perpetual Software Licenses: What They Are, How They Work, and When They Make Sense

In the world of software licensing, few terms are as enduring—and sometimes misunderstood—as the perpetual license. While the tech industry has shifted heavily toward subscription-based models, perpetual licenses still hold a solid place in both business and individual use cases. This article will walk you through everything you

Understanding ENUMs in PostgreSQL — The Right Way to Define and Use Them

Understanding ENUMs in PostgreSQL — The Right Way to Define and Use Them

When working with relational databases, data integrity and consistency are key principles that guide good schema design. One of the most common examples of this is when we want to restrict a column’s possible values — for instance, a user’s status can only be active, inactive, or banned. In