As businesses continue to rely on data-driven strategies, Business Intelligence (BI) tools have become essential for transforming raw data into actionable insights. In 2025, the BI landscape is thriving with tools designed for diverse needs—offering ...
Welcome to Day 4 of my SQL Tutorial Series! 👋 So far, we’ve learned what a database is, types of databases, and the role of a DBMS. Now, it’s time to talk about SQL itself, the operations it enables, and how data is organized. Let’s break it dow...
Problem description & analysis: A certain database table stores time-series data, with intervals of several seconds between each record. Task: Now we need to do a group and aggregation every minute, summarizing data for 5 minutes each time. For exam...
In today’s economy, resiliency is a not just an option but a necessity. Specifically for business industries like finance, healthcare where every millisecond holds significant amount of value, matter of fact where outages can cost millions. In these ...
🚀 Introduction In today's world, massive amounts of data are being generated every second. Choosing the right type of database has become a critical decision for developers, data engineers, and organizations aiming to manage large datasets efficient...
Problem While inserting data into a PostgreSQL table, I got this error: ERROR: Key (“userId“)=(1234) already exists.duplicate key value violates unique constraint “User_pkey“ SQL state: 23505 Details: Key (“userId“)=(1234) already exists. The userId...
Welcome back to Day 2 of my SQL tutorial series! 👋 Yesterday, we explored what SQL is and why it matters. Today, let’s go a step deeper and answer some fundamental questions: 👉 What exactly is a database? 👉 What is a DBMS? 👉 Is the DBMS really a ...
Hey everyone! 👋 Welcome to Day 1 of my SQL Tutorial Series. Today, let’s keep things simple and lay the foundation: 👉 What is SQL? 👉 Why should you learn it? 👉 How does it fit in the world of databases? 💡 What is SQL? SQL stands for Structured Q...
Hey everyone! 👋 I’m excited to launch this new series where we’ll explore SQL (Structured Query Language)—the language that powers data in almost every industry today. Whether you’re: ✅ A complete beginner curious about databases ✅ A developer looki...
Intro I’ll start off by saying, Linux users, this one’s for you! Ever worked on a project, created a remote SQL database but you’re unable to view your database structure or the data in it? Here is one way you can solve that problem. Problem Statemen...
