Have you ever wondered how database tables are actually stored on disk? The first instinct is that the database saves data row by row — and that’s true, but…
Ibrahim H. Al-Yazouri
Indexes are one of the most fundamental tools in a database engineer’s arsenal. Most developers know what an index does — but fewer stop to think about what…
Ibrahim H. Al-Yazouri
Design patterns are repeatable solutions to common problems in software design. A pattern isn’t a specific piece of code you copy-and-paste — it’s a general…
Ibrahim H. Al-Yazouri
If you open a file and immediately see a forest of if statements, switch es, and nesting that’s hard to follow, you’ve likely found a code smell. In object-…
Ibrahim H. Al-Yazouri
How Does Your Browser Find Websites? Understanding the Magic Behind DNS Introduction When you type a website name (e.g., www.example.com) into your browser,…
Ibrahim H. Al-Yazouri
Introduction In modern data analysis, simple aggregations like COUNT, SUM, and AVG are often insufficient for complex business requirements. SQL’s advanced…
Ibrahim H. Al-Yazouri
Introduction Modern relational database management systems (RDBMS) include sophisticated query optimizers that transform SQL queries into efficient executio…
Ibrahim H. Al-Yazouri
Introduction Imagine you’re building a modern web application that manages user data. You’ve designed a relational database to store the data, but your appl…
Ibrahim H. Al-Yazouri