Tech Skills
Data Analytics & Business Intelligence
Excel, SQL, Power BI, Tableau — turn raw data into business decisions
Skills in this topic
7 skills — Sign in to track your progress
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

Dev.to · Datta Sable
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Beyond the Grid: Engineering Surgical BI Dashboards with Next.js and Canvas APIs
The Crisis of "Slow Data" In the high-stakes worlds of Fintech and Global Sales, a...

Dev.to · Lucy
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
How to Transition from a Traditional Data Warehouse to a Modern Lakehouse
If your data warehouse feels slow, expensive, or hard to scale, you are not alone. Many teams are...

Dev.to · Dacid Chain
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
IDs First, Profiles Later: A Cheaper Way to Analyze Follower Graphs
Most audience-analysis projects start with one deceptively simple question: Which people are shared...

Dev.to · Mathieu K
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Extracting Publication Data from Substack
If you have a substack account, like me, you are probably wondering how the articles are stored and...

Dev.to · Ahmed Algrgawy
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
In investigations, assumptions kill
Like Jack Reacher once said: “In investigations, assumptions kill.” I think the same thing happens...

Dev.to · toshihiro shishido
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Sessions vs Page Views vs Users — What Each One Actually Counts
The 3 web analytics metrics everyone mixes up. Clear definitions, the base inequality (PV ≧ Sessions ≧ Users), which one to look at first, and how GA4 computes

Dev.to · beefed.ai
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Designing a Query Performance Insights Dashboard
Build a Query Performance Insights dashboard that surfaces EXPLAIN plans, latency, resource contention, and slow query attribution for fast triage.

Dev.to · gulnur
📊 Data Analytics & Business Intelligence
1mo ago
PostHog Custom Surveys: Beyond the Default UI
PostHog provides a powerful analytics and experimentation platform, including built-in surveys for...

Dev.to · muhammad naveed
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
WhyAnalyst: Why Every Data-Driven Decision Needs Better Analysis
Here is the link of app : https://whyanalyst-438909629186.asia-south1.run.app/ In today’s world, data...

Dev.to · Nick Joy
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Excel Training in Kerala for Advanced Spreadsheet Management and Reporting
Many fresh graduates in Kerala think Excel is just a basic office tool. But during interviews at...

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Junior Data Engineers Are Getting Wiped Out. Seniors Are Thriving.
52K+ tech cuts in Q1 2026, junior DE roles hit hardest. AI is doing entry-level work now. Here's the brutal split , and how to land on the right side.

Dev.to · circobit
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Von der Web-Tabelle zum Pandas DataFrame in 30 Sekunden
Du hast den perfekten Datensatz gefunden. Er sitzt direkt da auf einer Webseite, sauber formatiert in...

Dev.to · InstaLogic
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
How Business Intelligence Solutions in Dubai Are Transforming Decision-Making
Business environments in Dubai are evolving at a rapid pace, driven by digital transformation, cloud...

Dev.to · Rinon Tendrinomena
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
SQL Transactions and Write Conflicts
In databases, transactions are one of the most important concepts for ensuring data correctness,...

Dev.to · <devtips/>
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
10 SQL changes. One took 30 seconds. It cut query time by 85%.
A 2015 research paper tested every tip against real data. Most developers have never seen it. The...

Dev.to · Gowtham Potureddi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data Warehouse Design for Data Engineering Interviews: A Beginner's Guide to Fact Tables, Star Schemas, and Grain
Data warehouse design is the discipline of laying out tables so analytical questions are fast,...

Dev.to · Gowtham Potureddi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Snowflake for Data Engineering Interviews: A Beginner's Guide to the Cloud Data Warehouse
Snowflake is the cloud-native data warehouse most modern data teams stand on — it stores petabytes,...

Dev.to · Gowtham Potureddi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Amazon Redshift for Data Engineering — Columnar Storage, MPP, COPY, Distribution Keys, Spectrum
Amazon Redshift is the AWS cloud data warehouse that data engineers reach for when an analytical...

Dev.to · pranith m
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
# From DBA to Data Engineer: Leveraging Database Expertise for Robust Data Pipelines
The transition from a Database Administrator (DBA) to a Data Engineer is not a leap into the unknown;...

Dev.to · keeper
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
I Built a Database That Saves You From Googling 'PLA Temperature' Ever Again
Every time I switch filament brands, the same ritual: Google "Bambu Lab PLA Basic temperature",...

Dev.to · Martin Ndungu
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Python: The Engine Powering Modern Data Analytics A Beginner's Guide to Understanding Python's Role in Data Analytics
Python: The Engine Powering Modern Data Analytics A Beginner's Guide to Understanding Python's Role...

Dev.to · Rick Houlihan
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Lakebase, Meet PDB: The "Third-Generation" Database Oracle Shipped in 2013
By Rick Houlihan & Patrick Meredith Databricks named the right problem. Their answer is a...

Dev.to · sai arun kumar katherashala
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Introducing KORE: 50x Faster Than Parquet, 10x Smaller Than JSON
Introducing KORE: 50x Faster Than Parquet, 10x Smaller Than JSON Published: May 11,...

Dev.to · Michael
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Inner vs Outer Joins: The Two Fundamental Join Types in SQL
SQL joins fall into two fundamental categories — inner joins and outer joins — while LEFT, RIGHT, and...

Dev.to · Argha Sarkar
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
The Future of Business Intelligence: Integrating AI and Machine Learning
Business Intelligence, or BI, is a system that enables companies to understand and analyze their...

Dev.to · Lawrence Murithi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
The Great Data Debate: Should You Build Your Warehouse Top-Down or Bottom-Up?
Introduction Imagine you have a massive, disorganized garage. You need to clean it up so...

Dev.to · Vivek Kumar
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Beyond Basics: Mastering SQL's LEAD, LAG, RANK, DENSE_RANK, and NTILE
Go beyond window function basics and unlock the real power of LEAD, LAG, RANK, DENSE_RANK, and NTILE with real-world examples for analytics, reporting, and data

Dev.to · ManyOffer Career
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data Analyst Interview Questions 2026: What Actually Shows Up Across All Three Rounds
Most candidates preparing for data analyst interviews in 2026 treat the whole thing like a SQL exam....

Dev.to · Wangila russell
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Python and Its Role in the Data Analytics Space
Introduction Python is one of the most widely used programming languages in the world today. Over the...
![[06] Portfolio Defense Dashboard — One Screen to Rule Your Morning](https://media2.dev.to/dynamic/image/width=1200,height=627,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fv6gwlyp42tros64g30h4.png)
Dev.to · soy
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
[06] Portfolio Defense Dashboard — One Screen to Rule Your Morning
Everything comes together in a single Streamlit dashboard. Real-time portfolio tracking, margin alerts, dividend projections, and stress tests — all in one scre

Dev.to · Tricon Infotech
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
How Engineering Teams Can Build Data Pipelines That Drive Revenue
Data pipelines are often treated as plumbing. Something that needs to work, something that gets fixed...

Dev.to · Sasireka Balasubramaniyam
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Google Analytics 4: access data via Data API (Step-by-step)
If you want to build a custom report or dashboard for your Google Analytics data in your app or...

Dev.to · Kahuthu Muriuki
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Python in Data Analytics: A Practical Starting Point
I started learning Python not because I wanted to become a software developer, but because I kept...

Dev.to · Allen Yang
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Creating and Customizing Line Charts in Excel Using Python
Line charts are one of the most commonly used chart types for data visualization, particularly...

Dev.to · circobit
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Du Tableau Web au DataFrame Pandas en 30 Secondes
Vous avez trouvé le dataset parfait sur un site web. Maintenant vous en avez besoin dans...

Dev.to · Temitope Hassan
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Clean, Transform, and Load Data in Power BI: A Beginner-Friendly Guide
Introduction Data is only as powerful as the shape it’s in. Before dashboards tell compelling stories...

Dev.to · spkibe
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
The Silent Bug That Exposed All Tenant Data in Databricks Unity Catalog
We were building a multi-tenant data platform on Databricks. Multiple organisations sharing the same...

Dev.to · Kipngeno Gregory
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
How a Data Pipeline and Machine Learning Can Modernize DNA Paternity Testing in Kenya
A Pre-Research Article | Data Science, Data Pipelines & Genomic...

Dev.to · Gowtham Potureddi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data Lake Architecture for Data Engineering Interviews
Data lake architecture questions in data-engineering interviews almost always reduce to four...

Dev.to · Gowtham Potureddi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data Engineering Roadmap for Freshers (2026): A 13-Step Beginner's Guide from SQL to Your First Data Engineering Job
Data engineering is one of the fastest-growing tech careers in 2026. Companies collect huge amounts...

Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Building Your First Data Warehouse in Databricks — End to End 🎉
Building Your First Data Warehouse in Databricks — End to End 🎉 This is it. The article...

Dev.to · Archit Agarwal
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Reddit's Karma Score Is a Lie. Here's the Math Behind It.
Two comments. Same subreddit. Same topic. Posted minutes apart. One has +847 karma. It sits at the...

Dev.to · Martin Kamau
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Introduction to Python in Data Analytics
Python is a high-level programming language with various uses such as data analysis, web development,...

Dev.to · Alessandra Bilardi
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
When does Iceberg beat Parquet+projection on AWS Glue, and when doesn't ?
Why this project I built this repo because I didn't have one of this kind yet and,...

Dev.to · Datta Sable
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
The Invisible Wall: Hardening Your BI Infrastructure Against Modern Data Breaches
The modern BI stack is a goldmine for attackers. While we focus on 'Insights,' we often overlook the...

Dev.to · Mungai M.
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
How Python Powers Real-World Data Analytics
Python Isn't a Trend. It's the Standard. If you work with data in any capacity, whether...

Dev.to · Milcah Mukunza
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Python for Data Analytics
INTRODUCTION If you've spent any time exploring data analytics, you've probably heard the name...

Dev.to · tomasz dobrowolski
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Volatility Risk Premium in 30 Lines of Python (And the 5 Mistakes That Wreck It)
The VRP formula, a worked SPY example, a 30-line Python implementation, and the five pitfalls that quietly produce a number that looks right but isn't.
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