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

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
We Are Firing Data Engineers. PostgreSQL Does It For Free.
After spending exactly 45 hours over the last week forensically analyzing the cloud billing exports, infrastructure topologies, and… Continue reading on Postgre
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Building a Job Market Tracker: Aggregate LinkedIn, Indeed, and Glassdoor Data
Have you ever felt like the job market is shifting so fast that you just cannot keep up with the changes? It is honestly overwhelming trying to figure out which

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
This is how your Donut Charts should look in Power BI(.pbix included)
Donut charts in Power BI can be powerful when used correctly — but they’re also one of the most misused visuals in dashboards. A… Continue reading on Power BI »
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Best AI Tools for Data Analysis in 2026: Top Platforms for Analysts, UX Designers & Businesses
Photo by Luke Chesser on Unsplash Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
The Hardest Part of Scraping Isn’t Extraction — It’s Knowing When Your Data Is Wrong
Silent failures, partial responses, and the debugging nightmare nobody talks about Continue reading on Medium »
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
I built a free baby name database with 145 years of US data — Peek a Name
After spending way too many hours scrolling baby-name lists when my wife and I were name-hunting, I built Peek a Name — a free, no-signup baby name database wit
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Mastering AWS Data Lakes: Is Apache Iceberg Worth the Self-Managed Effort Over S3 Tables?
Man, does anyone else remember the early days of data lakes? It felt a lot like we were just, well, dumping everything into Amazon S3… Continue reading on Mediu
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Learn dbt for Analytics Engineering
Models, macros, tests, seeds, documentation, snapshots, exposures Continue reading on Level Up Coding »

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
2 Billion Rows in 4 Seconds — Most Snowflake Query is Not a Compute problem
I hit Run. Grabbed my coffee, the good stuff, because this query was about to touch two billion rows. Continue reading on Level Up Coding »
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
When the Uncertainty Is Bigger Than the Shock: Scenario Modelling for English Local Elections
A scenario analysis case study on calibrated uncertainty, historical error, and why some models are most useful when they refuse to forecast. The post When the
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Beyond Lists: Using Python Deque for Real-Time Sliding Windows
Stop shifting elements in lists! Discover why collections.deque is the secret to high-performance sliding windows, thread-safe queues, and efficient data stream

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data Science without Statistics is just trial and error.
Sounds harsh, but hear me out. Continue reading on Medium »

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Journal Figure Replication | Python Plotting: Bivariate Diagonal-Split Composite Triangular…
Bivariate Diagonal-Split Composite Triangular Heatmaps Continue reading on Top Python Libraries »
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data From Cars: The Hidden Information Modern Vehicles Collect — Joseph Sides
Continue reading on Medium »

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Why Modern Data Architecture is Aging Like Milk (And How Biomimicry Can Fix It)
Data is supposed to be the lifeblood of a modern organization. We are well past the stage of data being a simple resource. Continue reading on Medium »
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Discrete Time-To-Event Modeling – Predicting When Something Will Happen
Part 1: The basics — discretization of time, censoring and the life table The post Discrete Time-To-Event Modeling – Predicting When Something Will Happen appea
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Churn Without Fragmentation: How a Party-Label Bug Reversed My Headline Finding
A data quality case study from English local elections on categorical normalisation, metric validation, and why raw labels should never define analytical groups
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
How Map Animation AI is Revolutionizing Supply Chain & Business Insights
Modern supply chains are complex networks connecting suppliers, manufacturers, distributors, and retailers across the globe. Managing these networks require det

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
How does NoSQL DB retrieve data?
Speed comes from two things: Indexes that skip straight to your data, and RAM cache that avoids hitting disk twice... Continue reading on Medium »
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Building a PDF Parser for Financial Data: Lessons from Arbiter V2
I’m Matthew, building Arbiter Briefs — an AI engine that helps founders make high-stakes decisions. This week we shipped financial PDF ingestion, and I want to

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Feed Funeral: I Built a Shadow Profile of My Own Doomscrolling Habits
It was 2 am on a Thursday. I was reading about a software company’s IPO filing — a company I have no stake in, in a sector I don’t follow… Continue reading on M
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Basedash Dashboard Agent
The Basedash Dashboard Agent is a tool designed to simplify the process of building and managing internal dashboards for database-driven applications. Here’s a
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Building a Government Contract Matching Engine That Actually Works
Government procurement data is a mess. If you've ever tried to build anything on top of SAM.gov's API, you already know. Inconsistent field formats, missing NAI
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Pandemic Populism: Facebook Pages of Alternative News Media and the CoronaCrisis -- A Computational Content Analysis

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Bottling the River: Apache Fluss on EKS
Apache Fluss (incubating) is one of those projects that you heard about once maybe six months ago, didn’t really understand what the hype… Continue reading on f
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
How to Study the Monotonicity and Stability of Variables in a Scoring Model using Python
How can you validate that your variables tell a consistent risk? The post How to Study the Monotonicity and Stability of Variables in a Scoring Model using Pyth

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
How Confluent Scaled Self-Serve with Conversational Analytics
We built a Curated Context Architecture where high-stakes business questions return the same correct answer every time — across analysts… Continue reading on Me
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Event-Driven vs Scheduled Data Pipelines in 2026: Origins, Real-World Use Cases & Best Architecture Strategy
As organizations become increasingly data-driven in 2026, one of the most important decisions leaders face is how data should move across systems. Should busine

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Best Data Science Training in Kozhikode: Shape Your Future with In-Demand Skills
In today’s technology-driven world, data is at the core of innovation and decision-making. Companies across industries depend on data… Continue reading on Mediu

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
AI Just Made the Case for Going Deep
The depth vs. breadth debate has a new variable, and it changes everything. Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Data Contracts: Data Engineering Practice That Could Have Saved Us From a Silent Crisis
One renamed field. A dashboard showing $0 in revenue. An analytics team in panic. Here’s the data engineering practice that prevents this. Continue reading on M

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Python for Data Science — NumPy Data Types and Why They Matter
A practical guide to NumPy dtypes — and why they affect memory, precision, speed, missing values, and the reliability of your data work… Continue reading on Med
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
4 YAML Files Instead of PySpark: How We Let Analysts Build Data Pipelines Without Engineers
How we replaced Python pipelines with dlt, dbt, and Trino — and cut delivery time from weeks to one day. The post 4 YAML Files Instead of PySpark: How We Let An

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Web Scraping in 2026: Why Most Setups Fail (And What Actually Works)
Introduction Most web scraping guides focus on tools, frameworks and speed. Playwright, Puppeteer, rotating proxies — pick your stack and… Continue reading on M

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
THE DATA PHARAOHSChapter Six: The Men Who Held the World Together
How the Scribal Class of Ancient Egypt Built, Sustained, and Sometimes Destroyed the Most Powerful Information Infrastructure in Human… Continue reading on Leve

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Worldmonitor: Because Apparently My Brain Needed a Bloomberg Terminal for Civilizational Anxiety
An open-source dashboard that turns news, markets, geopolitics, AI, webcams, prediction markets, and infrastructure risk into one… Continue reading on Medium »
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
The Analyst’s Mindset: Navigating Scientific Research and Personal Branding Amidst Conflict-Induced…
The pursuit of scientific rigor within the context of active conflict and forced displacement represents one of the most profound… Continue reading on Medium »
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Correlation Doesn’t Mean Causation! But What Does It Mean?
What does correlation tells us? The post Correlation Doesn’t Mean Causation! But What Does It Mean? appeared first on Towards Data Science .
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Strategi Pengelolaan Data: Interaksi API dan Pembersihan Data
Tugas Pemrograman dan Data Raya Lanjutan Continue reading on Medium »

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
10 Functional Data Processing Techniques Every Data Analyst Must Deploy In Production
Functional programming patterns that make data transformations predictable, testable, and production-ready Continue reading on Medium »

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Modern Data Science Stack in 2026: Tools, Trends, and What I Actually Use Daily
A practical breakdown of tools like Python, SQL, Spark, and emerging AI-assisted analytics workflows Continue reading on CodeX »

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Municipal Intelligence for the GCC: Building the Decision Layer for Urban Governance
GCC municipal intelligence as a decision layer: evidence, review, governance, and regional urban coverage.Why the next generation of… Continue reading on Medium
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
A Career in Data Is Not Always a Straight Line, and That’s Okay
Sabrine Bendimerad on why flexibility is a crucial data science skill, the risks of outsourcing human thinking to AI agents, and the changing terrain of career
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
What is Agentic BI? How Autonomous AI is Replacing Static Dashboards
For the last decade, “self-service business intelligence” usually meant filtering a complex dashboard and hoping you selected the right metric. If a business le
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
How Spreadsheets Quietly Cost Supply Chains Millions
A simulation of how a single forecast change moves through five planning teams, and why most retailers lose money in the gap between Sales and Stores. The post
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Traditional vs AI Demand Forecasting: Comparing Approaches and Outcomes
Choosing the Right Forecasting Strategy Every supply chain manager faces a critical decision: stick with proven traditional forecasting methods or embrace AI-po
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Fix Any Excel Date Format: Stop the Headaches & Unify Messy Dates with DataSort AI
If you've ever wrestled with Excel dates, you know the frustration. One column shows 'MM/DD/YYYY', another 'DD-MMM-YY', and a third just throws up numbers or te
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Self-Service Analytics Trends, Tools and Best Practices for 2026
Self-Service Analytics Trends, Tools and Best Practices for 2026 Data is no longer limited to data teams. In 2026, businesses want every department to use data
DeepCamp AI