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 · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1h ago
Data Science Institute in Tilak Nagar — AI, ML & Python Training
In today’s digital world, businesses generate huge amounts of data every day. They need skilled professionals who can analyze this data… Continue reading on Med
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
9h ago
How to Write SQL Queries That Detect Unstable Join Filtering and Inconsistent Results
Query validation patterns that expose unstable joins and prevent inconsistent analytical outcomes Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
9h ago
How to Write SQL Queries That Detect Unstable Join Filtering and Inconsistent Results
Query validation patterns that expose unstable joins and prevent inconsistent analytical outcomes Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
14h ago
Imagine waking up one day only to discover your account has been suspended.
THE DOWNSIDE OF CENTRALISED STORAGE PLATFORMS Continue reading on Medium »
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
16h ago
Exploratory Data Analysis: Asking Good Questions of Your Data
Before you build any model or draw any conclusion, you need to actually understand what you are looking at. This is how professionals do… Continue reading on Me
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
16h ago
Exploratory Data Analysis: Asking Good Questions of Your Data
Before you build any model or draw any conclusion, you need to actually understand what you are looking at. This is how professionals do… Continue reading on Me
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
18h 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
23h 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
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d ago
A 15-Year Breakout That Never Looked Back
Testing Donchian Channels on AAPL Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d 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
1d 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
1d 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
1d 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
1d 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 · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d 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
1d 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
1d 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
1d 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
1d 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 · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1d 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
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 · 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 »
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 »
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 »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d 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 »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d 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
2d 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
2d 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
2d 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
2d 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 · 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
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
Datenstrukturist — Warum wir einen neuen Beruf für das Informationszeitalter brauchen
Mit der fortschreitenden Digitalisierung entstehen nicht nur neue Technologien, sondern auch neue Formen menschlicher Arbeit. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
Sales Performance Analysis
How I Analyzed 1,000 Retail Sales Transactions in Microsoft Excel to Uncover Business Insights Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
Data Analytics: How Everyday Industries Actually Use Analytics
Have you ever sat on your couch late at night, staring at your streaming app, wondering how it managed to suggest the exact true-crime… Continue reading on Medi
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
7 Python Libraries That Feel Like Having a Senior Dev on Your Team
They won’t write your code for you — but they’ll save you from writing the wrong code. Continue reading on Stackademic »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Stop using CTEs just to filter window functions.
If you’ve ever written a Query like this just to get the top record per category: Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Tutorial Membuat Dashboard HRD di Power BI untuk Analisis Karyawan
Divisi Human Resources (HR) tidak lagi hanya berfokus pada administrasi karyawan. Saat ini, HR juga dituntut mampu mengolah data untuk… Continue reading on Medi
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
5 Fungsi Power BI dalam Supply Chain dan Operasional Perusahaan
Perusahaan menghasilkan data dalam jumlah besar setiap hari, mulai dari data persediaan barang, pengiriman, produksi, hingga penjualan… Continue reading on Medi
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Beyond Dashboards: How Data Science and Predictive Analytics Are Transforming Business Decision…
For years, dashboards have been the cornerstone of business intelligence. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Beyond Dashboards: How Data Science and Predictive Analytics Are Transforming Business Decision…
For years, dashboards have been the cornerstone of business intelligence. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
The Invisible Problem in Agriculture: Why Two People Can Look at the Same Grain and See Different…
Imagine two experienced grain inspectors standing in front of the same sack of wheat. Continue reading on Medium »
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