Data Analytics & Business Intelligence

I spent three weeks trying to extract invoice data from a pile of PDFs sent by different vendors....

To anyone who has basic computer knowledge will tell you they know Excel, many will just say it's a...

Track your business performance, monitor conversions, and optimize your sales funnel with powerful...

CSV files are everywhere: analytics exports, sales reports, product usage logs, survey results,...

In the first article, I walked through a small Python data quality ETL starter that reads messy CSV,...

Pandas and SQL overlap a lot, so which should an analyst reach for? A practical comparison of where each one wins, with the same operations side by side.

Your ETL Pipeline Wasn't Built for AI — Here's How to Fix It in 2026 You've got a...

Cookie-based analytics misses every on-chain interaction outside your front end — and for Web3 teams,...

Track Medium Follower Growth and Social Graph Snapshots Follower count is vanity. Useful...

The era of passive data analytics is over. Today, the most forward-thinking data teams aren't just...

After working with Brazilian government data for a while, I've found the landscape confusing to...

Everyone wants a retention chart and most reach for a tool. You can get the core cohort triangle from...

How we run heavy ad-hoc analytical queries over tens of millions of viral-video snapshots by exporti

It's the third quarter. A team that shoots 40% from three on the season is sitting at 4-for-20 (20%)...

Introduction SQL databases often contain many tables that are related through common columns, such as...

Hello, DEV community! I’m currently working as a developer/engineer, and our data architecture...

Nobody grows up dreaming of pivot tables. But as the meme above knows too well, the spreadsheet was...

This article was originally published on dattasable.com. In the modern data landscape, the gap...

Introduction In the evolving landscape of data engineering, DuckLake is emerging as a...

Most conversations about algorithmic trading focus on the algorithm — the model, the signal, the...

Stop cramming every metric into one screen. A practical look at balancing information density and performance in Grafana dashboards.

Les tableaux web sont des chaînes de caractères. Tout est une chaîne. Mais quand on exporte en JSON...

title: Data Processing in Python — Tools & Patterns published: false tags: [python,...

TLDR; SQL excels at complex queries and transactions – joins, aggregations, ACID...

Excel is a computer program built by Microsoft that lets you organize information in a grid of rows...

CSV files are one of the most common formats for storing and exchanging data. Whether you’re working...

I helped redesign a large BigQuery-based enterprise data warehouse and cut spend by 57%. The biggest...

Microsoft Excel is an extremely popular tool used by many companies and other types of organisations...

I rebuilt the core ideas behind Parquet — encodings, compression, row groups, projection & predicate pushdown — in ~3,000 lines of pure Python. 91% smaller than

If you've ever tried to get structured, current, programmatically accessible macroeconomic data for...

My Week 1 Reflection in Data Science & Analytics Before starting my Data Science and Analytics...

My initial entry into data analysis was my belief that it would require me to learn a complex...

My first week at LuxDevHQ has been an enlightening one as I got to be introduced to the world of Data...

Dashboards Should Improve the Operating Picture is a practical operating principle, not a...

When I started learning Excel as part of my Data Science & Analytics course, I assumed it was...

May 25, 2026. This is not just another date on my calendar. This marks the beginning of one of the...

The Grievance Catalog: Why Your Population's Pain Is Already on File Adrian Alexandru Stinga | Lead...

Introduction to excel Excel is a spreadsheet application made by microsoft part of...

How Excel is Used in Real-World Data Analysis As I begin my journey into Data Science and Analytics,...

Microsoft Excel and Its Importance in Data Analysis Microsoft Excel is a spreadsheet application...

Microsoft Excel When I decide that I would pursue data science as a career path, I knew...

Hello everyone! 👋 I'm excited to finally join the DEV community. I hold a First Class Honors degree...

Before this week, I thought Excel was just a fancy calculator with boxes. But after three days of my...

How Excel is Used in Real-World Data Analysis Microsoft Excel is one of the most popular spreadsheet...

Microsoft Excel is a spreadsheet tool that is used to organize, format, analyze and store data in...

A step-by-step walkthrough of my multi-sample single-cell RNA sequencing project — written for anyone...

Understanding Wilson Score, confidence intervals, and the mysterious 1.96. Originally published on...

How I approach SQL tuning end to end — reading execution plans, the cost model, query rewrites, index strategy, the three join algorithms, the implicit-cast tra