Tech Skills

Data Analytics & Business Intelligence

Excel, SQL, Power BI, Tableau — turn raw data into business decisions

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lessons
Skills in this topic
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Data Literacy
beginner
Write SELECT queries with JOIN and GROUP BY
Excel & Spreadsheets
beginner
Build a dynamic dashboard with pivot tables and slicers
SQL Analytics
intermediate
Write window functions (ROW_NUMBER, LAG, LEAD)
BI Tools
intermediate
Build an interactive dashboard from a SQL source
Python for Data
intermediate
Clean and transform a messy dataset with pandas
Data Storytelling
intermediate
Build a stakeholder dashboard with a narrative structure
ML for Analytics
advanced
Build a churn prediction model
All Reads (7,339) Articles (3013)Blog Posts (3422)Tutorials (369)Research Papers (39)News (496)
What is Data Science? The Complete Infrastructure Hub (2026 Guide)
Dev.to · Laiba Razzaq 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
What is Data Science? The Complete Infrastructure Hub (2026 Guide)
A complete architectural and infrastructure breakdown of what data science actually looks like in production.
Day 5 of 100 Days of ClickHouse®: Writing Your First Query
Dev.to · Kanishga Subramani 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Day 5 of 100 Days of ClickHouse®: Writing Your First Query
Every database journey begins with a simple query. If you’re new to ClickHouse®, one of the fastest...
How Excel Is Used in Real-World Data Analysis
Dev.to · janejoy mathiu 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel Is Used in Real-World Data Analysis
Microsoft Excel is one of the most powerful and widely used tools for real-world data analysis. It is...
How Excel is Used in Real-World Data Analysis
Dev.to · Isaac Atuti 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel is Used in Real-World Data Analysis
Introduction When entering the world of data science, it is easy to get swept up in...
How Excel is used in Real-World Data Analysis
Dev.to · Erick Orwa 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel is used in Real-World Data Analysis
Introduction to Excel Excel is a Microsoft program used to organize, validate, clean, and...
How Excel is used in real-world Data Analytics
Dev.to · Beizy Amanda 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel is used in real-world Data Analytics
Introduction Excel isn't just for budgets and to-do lists. In the real world, it is still...
Your Scraper Collected 50 Rows. There Were 4,000.
Dev.to · Alex Spinov 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Your Scraper Collected 50 Rows. There Were 4,000.
A scraper can pass every check you wrote and still be wrong about the one thing you actually care...
how Excel is used in the real world
Dev.to · Abdisalan 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
how Excel is used in the real world
*Introduction * Excel is one of the widely used tools in the corporate world mainly for...
Excel and Real-World Data Analysis - What I Learned in Week 1
Dev.to · Sylvia Ndili 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Excel and Real-World Data Analysis - What I Learned in Week 1
To be honest, when I signed up for a Data Science and Analytics course, it hadn't crossed my mind...
How Excel is Used in Real-World Data Analysis
Dev.to · Melvin 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel is Used in Real-World Data Analysis
Microsoft excel is a spreadsheet program used to collect, analyze, store, calculate and visualize...
HOW EXCEL IS USED IN REAL WORLD DATA ANALYSIS
Dev.to · Ngugi Eliza 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
HOW EXCEL IS USED IN REAL WORLD DATA ANALYSIS
Introduction Excel is a spreadsheet application developed by Microsoft that helps users...
How Excel is Used in Real-World Data Analysis
Dev.to · Ruto Kipkirui Robert 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel is Used in Real-World Data Analysis
Introduction In today's fast-paced business environments, data is considered the...
How Excel is Used in Real-World Data Analysis
Dev.to · Steve Mwangi 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel is Used in Real-World Data Analysis
I have began my journey as a beginner in the data analysis field by learning excel. I have previously...
Excel For Data Analytics
Dev.to · Rodney Nyamu 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Excel For Data Analytics
Introduction Excel is a spreadsheet software that allows you to collect, organize,...
I'm a Data Analyst building in public — here's what I'm working on 🚀
Dev.to · Zeba Mushtaq 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
I'm a Data Analyst building in public — here's what I'm working on 🚀
Hey DEV! 👋 I'm Zeba — a Data Analyst and AI enthusiast from Lahore, Pakistan. I just joined this...
Day 4/100: Understanding the Architecture That Makes ClickHouse® So Fast
Dev.to · Kanishga Subramani 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Day 4/100: Understanding the Architecture That Makes ClickHouse® So Fast
When people first hear about ClickHouse®, the conversation usually starts with performance. "How can...
How to Escape and Unescape JSON Strings (Quotes, Backslashes, Newlines & Unicode)
Dev.to · Avinash Verma 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How to Escape and Unescape JSON Strings (Quotes, Backslashes, Newlines & Unicode)
What JSON string escaping is, the characters you must escape, and how to escape/unescape JSON with examples in JavaScript, Python, Java and C#.
How Excel is Used in Real-World Data Analysis
Dev.to · Okall Omondi 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Excel is Used in Real-World Data Analysis
What is Excel? Well, the simplest answer? Excel is a tool. You might ask, which tool?...
I built a data-contract validator in pure Python (no pandas, no PyYAML) and it caught a 30% revenue ghost
Dev.to · Haji Rufai 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
I built a data-contract validator in pure Python (no pandas, no PyYAML) and it caught a 30% revenue ghost
Most data bugs don't crash — they drift. DataPact is a zero-dependency framework for declaring what your data should look like, then enforcing it in pipelines a
I built a free SQL practice game where you work at a fictional Singapore bank
Dev.to · Martin 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
I built a free SQL practice game where you work at a fictional Singapore bank
I've been frustrated with SQL learning resources for a while. Most are either: Dry reference...
Learn SQL Once, Use It for 30 Years: Why the Skill Doesn't Expire
Dev.to · Conor Dobbs 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Learn SQL Once, Use It for 30 Years: Why the Skill Doesn't Expire
SQL rests on Codd's 1970 relational model, is declarative so it gets faster without rewrites, and was standardized in 1986. Why that makes it a rare skill that
HOW EXCEL IS USED IN REAL-WORLD DATA ANALYSIS
Dev.to · Jedidah Ondiso 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
HOW EXCEL IS USED IN REAL-WORLD DATA ANALYSIS
Excel is a powerful spreadsheet program developed by Microsoft. It is used to organize, calculate,...
Charting Twitch Chat Velocity: Hype Curve Analysis for Esports VODs
Dev.to · Devil Scrapes 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Charting Twitch Chat Velocity: Hype Curve Analysis for Esports VODs
Quick answer: To measure Twitch chat hype or velocity, pull the full VOD chat using the...
Analytics Events Need Context to Stay Useful
Dev.to · WebmasterID 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Analytics Events Need Context to Stay Useful
Analytics Events Need Context to Stay Useful is a practical operating principle, not a slogan. The...
What Does a Product Data Scientist Actually Do?
Dev.to · Argha Sarkar 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
What Does a Product Data Scientist Actually Do?
Nowadays, everyone is talking about data science, but not many people know what a Product Data...
Data Product Reviews: Why They Fail Before Starting
Dev.to · David Ohnstad 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
Data Product Reviews: Why They Fail Before Starting
David Ohnstad explains why mid-year data product reviews collapse when teams can't answer critical questions. Learn how to fix broken review processes.
How Character Sets, Collations, and String Comparisons Cause Subtle Data Drift in GBase 8a
Dev.to · Michael 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4w ago
How Character Sets, Collations, and String Comparisons Cause Subtle Data Drift in GBase 8a
Many "the results look wrong" problems in a gbase database don't come from incorrect imports or bad...
3.5+ years in the making: Live Analytics without AI
Dev.to · Patrick Wunderlin 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
3.5+ years in the making: Live Analytics without AI
Just wanted to share my journey after 3.5 years of building a live web analytics tool from scratch,...
Normalizing DATEX II Across 30 European National Access Points
Dev.to · Roman Kotenko 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Normalizing DATEX II Across 30 European National Access Points
EU Directive 2010/40/EU mandates that every Member State operates a National Access Point (NAP) that...
How Excel is Used in Real-World Data Analysis
Dev.to · Soren 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
How Excel is Used in Real-World Data Analysis
Microsoft Excel is a spreadsheet application developed by Microsoft that allows users to store,...
Day 3 of 100 Days of ClickHouse® - ClickHouse® vs PostgreSQL
Dev.to · Kanishga Subramani 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Day 3 of 100 Days of ClickHouse® - ClickHouse® vs PostgreSQL
ClickHouse® vs PostgreSQL: Understanding the Differences Between OLAP and OLTP Databases One of the...
How we built a 10,000-run Monte Carlo simulator for the 2026 World Cup
Dev.to · Waqas R 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
How we built a 10,000-run Monte Carlo simulator for the 2026 World Cup
The 2026 World Cup is the first with 48 teams and 104 matches, which makes it a genuinely interesting...
If the warehouse already has the data, why are we copying it elsewhere?
Dev.to · Marco Gazerro 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
If the warehouse already has the data, why are we copying it elsewhere?
When we started working on Krenalis, we spent a lot of time reviewing how customer data typically...
How Data Science Is Transforming Banking and Finance in 2026
Dev.to · Ntech Global Solutions 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
How Data Science Is Transforming Banking and Finance in 2026
The banking and finance industry has undergone a remarkable digital transformation over the last...
How Excel is Used in Real-World Data Analysis
Dev.to · Gabriel Mbuva 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
How Excel is Used in Real-World Data Analysis
Introduction Excel is one of the most used tools for data analysis. It allows beginners...
How Excel Is Used in Real-World Data Analysis
Dev.to · Mwai Victor Brian 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
How Excel Is Used in Real-World Data Analysis
Introduction Excel is an application to store, organise, and analyse data in a...
I built a Databricks medallion lakehouse to roast my own YouTube history (Bronze Silver Gold Existential Dread)
Dev.to · Shaan Satsangi 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
I built a Databricks medallion lakehouse to roast my own YouTube history (Bronze Silver Gold Existential Dread)
There's a normal way to analyze your YouTube watch history. You export it from Google Takeout, open a...
Redshift Check-In: Spring 2026
Dev.to · elliott cordo 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Redshift Check-In: Spring 2026
I have a soft spot for Amazon Redshift. One of my early clients was a pre-GA adopter, potentially...
Why Dremio's Value Is Unique to Apache Iceberg Lakehouses and Agentic Analytics
Dev.to · Alex Merced 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Why Dremio's Value Is Unique to Apache Iceberg Lakehouses and Agentic Analytics
Most data teams have already made two decisions, even if they haven't written them down yet. The...
Part 2: Event Pipeline Design: The Real-Time Data Lifecycle from Kafka to Lakehouse
Dev.to · Tayfun Yalcinkaya 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Part 2: Event Pipeline Design: The Real-Time Data Lifecycle from Kafka to Lakehouse
In the first article, we covered the core concepts of Event Driven Architecture, topic/channel design...
Start With the Question Before Adding Analytics Events
Dev.to · WebmasterID 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Start With the Question Before Adding Analytics Events
Start With the Question Before Adding Analytics Events is a practical operating principle, not a...
QN : Get started with lakehouses in Microsoft Fabric
Dev.to · Paulet Wairagu 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
QN : Get started with lakehouses in Microsoft Fabric
A lakehouse is a unified platform that combines: The flexible and scalable storage of a data...
QN:Introduction to end-to-end analytics using Microsoft Fabric
Dev.to · Paulet Wairagu 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
QN:Introduction to end-to-end analytics using Microsoft Fabric
Quick Short notes series Microsoft Fabric is an end-to-end analytics platform that provides a...
Why We Built an SQL Layer for DynamoDB
Dev.to · Camma Smith 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Why We Built an SQL Layer for DynamoDB
The SQL vs. NoSQL debate has been running long enough that most engineers have stopped having it. The...
Polars Enhances Distributed Compute with Kubernetes-Based Engine for Improved Performance and Usability
Dev.to · Roman Dubrovin 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Polars Enhances Distributed Compute with Kubernetes-Based Engine for Improved Performance and Usability
Polars Distributed Engine on Kubernetes: Bridging the Gap in Data Processing Polars, a...
Try the Tech Radar #6 (Final) — Semantic Layer in 200 Lines: One Definition, Many SQL Consumers
Dev.to · SEN LLC 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Try the Tech Radar #6 (Final) — Semantic Layer in 200 Lines: One Definition, Many SQL Consumers
Thoughtworks Technology Radar Vol 34 (April 2026) brought Semantic layer back to the Trial ring....
# Modernizing the Pitch: Building an Automated SQL Data Quality and Transformation Pipeline for Multi-Club Scouting Platforms
Dev.to · Ishak Ahmed 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
# Modernizing the Pitch: Building an Automated SQL Data Quality and Transformation Pipeline for Multi-Club Scouting Platforms
In global football administration, data is the ultimate competitive edge. Multi-club organizations...
Build a Python Data Quality ETL Starter for Messy CSV, Excel, JSON, and API-Style Data
Dev.to · Bob Oner 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 1mo ago
Build a Python Data Quality ETL Starter for Messy CSV, Excel, JSON, and API-Style Data
Small teams often receive data before it is ready for reporting. It may come from a CSV export, an...