Stefano MeloccaroStructural Differences Between OLTP and OLAP SystemsIn one of my previous articles, we discussed the main differences between OLTP (Online Transaction Processing) and OLAP (Online Analytical…Jul 24Jul 24
Stefano MeloccaroAce Your SQL Interview: Top 9 Must-Know Questions and AnswersSQL interview questions, especially if done during a live session, can be challenging; however, knowing in advanced which are the most…Jul 8Jul 8
Stefano MeloccaroData Warehouse Schemas Explained: Star, Snowflake, GalaxyIn the world of SQL and data warehousing, organizing and structuring data for efficient querying and reporting is paramount. Three of the…Jul 4Jul 4
Stefano MeloccaroOLTP vs OLAP: An Introduction to Database SystemsA relational database is a system for storing and managing data organized into tables. Within this framework, there are two primary types…Jun 26Jun 26
Stefano MeloccaroPowerBI Dashboard Design: 5 Tips to Improve the UXCreating a Power BI dashboard involves more than just compiling accurate data; it requires thoughtful design that enhances the user…Jun 6Jun 6
Stefano MeloccaroIntroduction to a relational database (SQL)A relational database is a collection of data elements with predefined relations between them. These elements are represented in the…Jul 31, 2020Jul 31, 2020
Stefano MeloccaroSQL’s components — DDL, DML, DCL and TCLAlthough the vendors of relational database management system have their own implemented version of the SQL language, exist anyway an…Jul 16, 2020Jul 16, 2020