In one of my previous articles, we discussed the main differences between OLTP (Online Transaction Processing) and OLAP (Online...

This article report the most common SQL interview questions to help anyone who want to work in data related job to ace the interview.

Unlock the secrets of Star, Snowflake, and Galaxy schemas in data warehousing. Enhance your data analysis skills with our latest article!

This is an introduction to Database systems in which I have explored the main differences between an OLTP and OLAP system

Although the vendors of relational database management system have their own implemented version of the SQL language, exist anyway an...

A relational database is a collection of data elements with predefined relations between them. These elements are represented in the...