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 · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2h ago
Automating Source-to-Target Mapping
I built lineage-mcp (Agent-STTM), an MCP server + CLI that reads real SQL scripts and XML ETL exports (SSIS, Informatica PowerCenter, or a… Continue reading on
Medium · Startup
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
8h ago
The Sharpe Ratio: The Metric That Runs the Investment Industry
Most investors have heard of the Sharpe ratio. Fewer realize how much weight it actually carries behind the scenes, from how pension funds… Continue reading on
Dev.to · gikonyo-v
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
9h ago
Let's Talk Relationships and Joins
Here's something nobody tells you when you start Power BI: the visuals are the easy part. You can...
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
10h ago
A 15-Year Breakout That Never Looked Back
Testing Donchian Channels on AAPL Continue reading on Medium »
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
12h ago
SQL Joins Explained with Real Examples (INNER, LEFT, RIGHT & FULL JOIN)
SQL Joins Explained with Real Examples Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
12h ago
Seeing Is Believing: How to Visualize a Linear Regression Model in R
If you’ve ever pasted the output of summary(lm(...)) into a Slack message or a slide deck, you know the problem: coefficients, standard… Continue reading on Med
InfoQ AI/ML
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
13h ago
AWS Introduces Amazon S3 Annotations
AWS recently announced Amazon S3 Annotations, a feature that lets teams attach rich, searchable context such as summaries, classifications, compliance data, or
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
14h ago
# Generating Sample Elon Musk Tweet Data Using Python for Practicing Fabric’s Medallion…
**Subtitle:** A hands-on guide to simulating real-world Data Engineering scenarios — from Python data generation to Power BI Direct Lake… Continue reading on Me
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
14h ago
What Building a Geospatial Analytics Dashboard Taught Me About Visualizing Data at Scale
Looking at a spreadsheet containing hundreds of districts and dozens of demographic indicators rarely reveals meaningful patterns. Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
14h ago
What Building a Geospatial Analytics Dashboard Taught Me About Visualizing Data at Scale
Looking at a spreadsheet containing hundreds of districts and dozens of demographic indicators rarely reveals meaningful patterns. Continue reading on Medium »
Dev.to · 네이쳐스테이
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
16h ago
Unpacking the S&P 500 and Nasdaq: A Deep Dive into Index Performance
Introduction The S&P 500 and Nasdaq are two of the most widely followed indices in the...
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
16h ago
9 Must-Know SQL Queries for Data Analysts and Data Scientists
SQL (Structured Query Language) is a fundamental tool for data professionals like data analysts and data scientists. While basic SQL… Continue reading on Medium
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
18h ago
10 SQL Techniques for Optimizing Refresh Schedules for YTD, R12M, and Rolling Window Aggregations
Scheduling strategies that optimize refresh efficiency for time-based aggregations and analytical workloads Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
18h ago
10 SQL Techniques for Optimizing Refresh Schedules for YTD, R12M, and Rolling Window Aggregations
Scheduling strategies that optimize refresh efficiency for time-based aggregations and analytical workloads Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
18h ago
The Math of Civilizational Asset-Stripping: A Regression Model of Oligarchic Myopia
When you look at the current geopolitical and economic landscape, it is easy to assume that the ruling class has simply lost its mind. Continue reading on Mediu
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
21h ago
Part 4: Advanced Data Engineering: Skew, Streams, and the Delta Lake Revolution
The advanced techniques that separate hobbyists from production experts. Continue reading on Medium »
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
22h ago
Predicting Global Air Quality with 99.93%
A data science deep-dive into 23,463 cities, one Random Forest model, and the pollutant that explains almost everything Continue reading on Medium »
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
23h ago
From Churn Model to AI Assistant: How I Built an End-to-End Data Science Product
By Deepti Dhanapala | Data Scientist | MPS Data Science, University at Buffalo Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
23h ago
From Churn Model to AI Assistant: How I Built an End-to-End Data Science Product
By Deepti Dhanapala | Data Scientist | MPS Data Science, University at Buffalo Continue reading on Medium »
Dev.to · Mary Nyandia
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
23h ago
My Journey Into Data Analysis: From Basics to SQL
Over the past few weeks, I’ve been diving into the fundamentals of data analysis. It’s been an eye...
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Is This Market Lying to Me? Part 1: The Problem and the Pipeline
This is the first in a six-part series on building a real-time surveillance pipeline for prediction markets. Part 1 lays out the problem… Continue reading on De
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
My OIBSIP Journey: How Oasis Infobyte Helped Me Grow as a Data Analyst
When I signed up for the Oasis Infobyte Summer Internship Program (OIBSIP) in the Data Analytics domain, I wasn’t entirely sure what to… Continue reading on Med
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
From Strava Data to Race Insights: Building a Tool to Understand Training and Race Performance
Build an app that pulls Strava data to visualize how your training impacts your race performance. Continue reading on Medium »
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Population & Sample in Data Science!
Why tasting one spoon of soup tells you about the whole bowl, & how getting this wrong once humiliated a magazine in front of an entire… Continue reading on Med
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Population & Sample in Data Science!
Why tasting one spoon of soup tells you about the whole bowl, & how getting this wrong once humiliated a magazine in front of an entire… Continue reading on Med
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Population & Sample in Data Science!
Why tasting one spoon of soup tells you about the whole bowl, & how getting this wrong once humiliated a magazine in front of an entire… Continue reading on Med
Medium · Deep Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Population & Sample in Data Science!
Why tasting one spoon of soup tells you about the whole bowl, & how getting this wrong once humiliated a magazine in front of an entire… Continue reading on Med
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Understanding Customer Loyalty Through 100,000 Starbucks Orders: An RFM Analysis
An RFM Analysis of Customers through Starbucks Order Patterns Continue reading on Medium »
Dev.to · Ken-Mutisya
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Get a Stock Earnings Calendar as Clean JSON (Earnings, Dividends, IPOs, Splits)
If you have ever tried to build anything around earnings season, a trading dashboard, a backtest, a...
Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
4 Ways to Stop AI From Silently Ruining Your Data
A green pipeline doesn’t mean your data is correct. Continue reading on ILLUMINATION »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
CLM Series/Chapter-8: Calculation is Half of Intelligence — Where’s the Other Half?
CLM Series — Chapter 8 / 50 Continue reading on Medium »
Dev.to · PrismResume
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Structuring a Senior Data Scientist Resume After a Chinese SOE Tenure
Learn how to restructure your senior data scientist resume from a Chinese state-owned enterprise for Western tech roles. Includes a before/after bullet rewrite,
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Why Gojek’s Biggest Complaint Isn’t About Drivers
I analyzed 225,000 app reviews with machine learning. The results surprised me. Continue reading on Medium »
Dev.to · Athreya aka Maneshwar
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Data structures your CS degree kind of glossed over
Hello, I'm Maneshwar. I'm building git-lrc, a Micro AI code reviewer that runs on every commit. It is...
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Raincloud Plots with PtitPrince: See What Your Data Is Really Doing
Three views of your data distribution in one function call Continue reading on Data Science Collective »
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Confused Between Data Science, Data Analytics, Cloud Computing, DevOps, Data Engineering, and Generative AI? Here's How to Choose the Right Career
Choosing the right technology can be overwhelming. Every day, you come across videos, blogs, and social media posts claiming that one technology is better than
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Data Science with AI — Join IDSA Janakpuri Today
Unlock your career potential with the Institute of Data Science and Analytics (IDSA), Janakpuri’s Data Science with AI Course — Delhi’s… Continue reading on Med
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Data Science with AI — Enroll Now at Lonestar Academy Janakpuri
Step into the future of technology with Lonestar Academy Janakpuri’s Data Science with AI Course. Trusted by 15,000+ learners, we are… Continue reading on Mediu
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Stop Writing Python Classes Until You Learn The 4 Things You Can Do To Every Piece Of Data An…
The data lives inside your objects. Most beginners only ever learn to put it in, and never touch it again. Continue reading on CodeToDeploy »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Why I Stopped Trying to Predict Electricity Price Spikes (And Built Something Better Instead)
A weekend project on nodal electricity markets, and the modeling mistake I almost made Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Why I Stopped Trying to Predict Electricity Price Spikes (And Built Something Better Instead)
A weekend project on nodal electricity markets, and the modeling mistake I almost made Continue reading on Medium »
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
Arbeitszeiterfassung 2026: Unternehmen auf die neue Pflicht vorbereiten
```html Stellen Sie sich vor, Sie sind ein Unternehmer und müssen sich plötzlich mit einer neuen, komplexen Regelung auseinandersetzen. Das ist die Situation, i
Reddit r/artificial
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
ORBIS
The world is not lacking information. It is drowning in fragments. Markets move. Governments shift. Conflicts evolve. Supply chains fracture. Policy changes rip
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
The Invisible Architecture of Truth: Why the World’s Most Boring System is Our Last Defense Against…
Universal Bibliographic Control isn’t just library science. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
The Invisible Architecture of Truth: Why the World’s Most Boring System is Our Last Defense Against…
Universal Bibliographic Control isn’t just library science. Continue reading on Medium »
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
SQL Window Functions: SQL’s Biggest Aha! Moment
SQL Window Functions Explained: ROW_NUMBER, RANK, DENSE_RANK, and NTILE Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
What If Fraud Doesn’t Live in Transactions? What If It Lives Between Them?
For decades, financial crime detection has followed a remarkably simple philosophy. Every transaction is evaluated on its own. The system… Continue reading on M
Dev.to · Juhi Singhal
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
5 SQL Interview Questions That Trip Up Beginners
5 SQL Interview Questions That Trip Up Beginners If you're prepping for a tech interview,...
DeepCamp AI