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 · Hanzala Mehmood
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Data Analyst CV Keywords: The 2026 ATS Guide
TL;DR Data analyst screening is unusually technical: the ATS matches specific languages...

Dev.to · Krunal Kanojiya
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Batch vs Real-Time Streaming: When to Use Each (with Examples)
Every data pipeline makes one foundational decision before a single line of code is written. Does it...

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Python vs SQL: Which Should You Learn First?
If you’re planning to start a career in data analytics, you’ve probably come across this question: Continue reading on Medium »

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Power BI vs Python for data visualisation — which one should you actually use?
I use both professionally. They are not competing tools — they solve different problems. Here is the honest breakdown nobody gives you. Continue reading on Medi

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Handling Multi-Grain Fact Tables Incorrectly in Power BI: Causes, Consequences, and Proven Modeling…
One of the fastest ways to create inaccurate reports in Power BI is to combine fact tables that exist at different levels of detail… Continue reading on Power B

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Data with a Pulse: Why Healthcare Analytics is the Ultimate Intersection of Math & Social Impact
Every day, hospitals around the world have to generate petabytes of data from electronic health records (EHR) to patient check-in times… Continue reading on Med
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Data cleaning is notoriously known as the most time-consuming phase of any data science workflow…
To solve this problem, I built and published PuraLang Engine—an open-source, AI-driven Domain-Specific Language (DSL) framework that… Continue reading on Medium

Dev.to · Allen Yang
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Manage Excel Worksheets in Python: Create, Copy, Delete, and Rename
Worksheets are the fundamental units for organizing and separating data in Excel files. A single...

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
# The Market’s Enigma: How to Read Order Flow Before the Move Happens
In the winter of 1941, the codebreakers at Bletchley Park were not trying to read German messages directly. They were looking for patterns… Continue reading on

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Building a Cloud-Ready ETL Pipeline with Python: From Raw Data to Analytics-Ready Insights
In the modern data-driven landscape, organizations generate vast amounts of information from disparate sources. Before this data can be… Continue reading on Med

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Debugging a Distributed Job Stuck in CANCELING in Apache SeaTunnel
Recently, I worked on an issue in Apache SeaTunnel where a job could sometimes stay in the CANCELING state forever after a user requested… Continue reading on M

Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Day 39: How ClickHouse® Powers Real-Time Analytics
Real-time analytics has become a core requirement for modern applications. Product teams expect...

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Surviving the Coursework Crunch: Time Management for Data Science Students
Every Data Science Students program eventually hits the same wall. Somewhere around midterms, a problem set in statistical inference lands… Continue reading on
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Titanium Dioxide Prices Index Analysis with Quarterly Trend and Forecast Prices Chart
<img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazon

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Data Science Course: Build Future-Ready Skills for a Successful Career
Data Science Course: Build Future-Ready Skills for a Successful Career Continue reading on Medium »

Dev.to · Nick
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Part 15: Workflow Patterns and Recipes - Data Transformation
As we conclude this 15-part series on Vyshyvanka, we want to leave you with practical tools. One of...

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Month‑End Offer: Data Science & Analytics Courses — Janakpuri
Boost your career with Delhi’s…
Special month‑end discount available — enroll before the offer ends! Institute of Data Science and Analytics, Janakpuri — trusted… Continue reading on Mediu

Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
ClickHouse 26.6 latest update
ClickHouse 26.6 Deep Dive: Streaming Queries, MPP Execution, Geospatial Analytics, and...

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
The Tiny White Grain That Runs The World (And No — It’s Not Cocaine)
Finance wants to call it the new oil, but this is the oldest power source on Earth Continue reading on The Quantastic Journal »
ArXiv cs.AI
📊 Data Analytics & Business Intelligence
📄 Paper
⚡ AI Lesson
5d ago
Computational Analysis of Heart Rate Variability in Healthy Adults
arXiv:2606.26816v1 Announce Type: new Abstract: Heart Rate Variability (HRV) analysis is a key indicator of cardiac physiological state and aids in disease diag

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
How top 7 ccTLD zones are covered by AllZonefiles.io in June 2026
Jun 26, 2026 · 1 min read Continue reading on Medium »

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
I’m a Data Analyst. Here’s the Plan I Made When I Realized My Job Was Changing.
The 5 things worth building that automation can’t replace — and how you can start this week. Continue reading on Data Science Collective »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
I’m a Data Analyst. Here’s the Plan I Made When I Realized My Job Was Changing.
The 5 things worth building that automation can’t replace — and how you can start this week. Continue reading on Data Science Collective »

Medium · Programming
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
SQL Text Sorting With Collations
Text sorting can feel small until two databases give different answers for the same text. Reports can place uppercase names ahead of… Continue reading on Medium

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
When Your Chart Lies to You: The Truth Behind Histograms and KDE
What every beginner data analyst needs to understand before trusting any distribution plot. Continue reading on Medium »

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
When Your Chart Lies to You: The Truth Behind Histograms and KDE
What every beginner data analyst needs to understand before trusting any distribution plot. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Why CDP Fails Without Executive Alignment? ( Audio version included)
In today’s data-driven business landscape, many companies invest in a CDP (Customer Data Platform) expecting better customer insights… Continue reading on Mediu
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
How an Altered Gaming Habit Could Save a Life
How Live-Service Telemetry Can Solve the Modern Isolation Epidemic Continue reading on Medium »

Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Your Pandas Code Is Slow: 20 Optimization Techniques for Processing Millions of Rows Faster
Most Pandas bottlenecks aren’t caused by large datasets — they’re caused by a handful of expensive coding patterns. Continue reading on Data Science Collective

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Your Pandas Code Is Slow: 20 Optimization Techniques for Processing Millions of Rows Faster
Most Pandas bottlenecks aren’t caused by large datasets — they’re caused by a handful of expensive coding patterns. Continue reading on Data Science Collective

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Your Pandas Code Is Slow: 20 Optimization Techniques for Processing Millions of Rows Faster
Most Pandas bottlenecks aren’t caused by large datasets — they’re caused by a handful of expensive coding patterns. Continue reading on Data Science Collective

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
The Math That Runs Every Database
Every SQL query you’ve ever written is secretly a chain of mathematical operations. Here’s the system hiding underneath it. Continue reading on Science Spectrum
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
This Project Made Me More Serious About Building Things People Can Trust
The longer I worked on it, the less I cared about impressiveness and the more I cared about whether the system felt worth relying on. Continue reading on Medium

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
️♂️Data Gathering by Any Means
“Data is the new oil,” the quote says. But in reality, it may be far more valuable than oil, because oil is still measured in fiat… Continue reading on Medium »

Semi Analysis
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
US Grid Constraints: Towards 40GW+ of Behind-The-Meter Datacenter by 2028?
Why the Grid Can't Keep Up, and Why that Drives Behind-The-Meter 50%+ of DCs/Year By 2028

Dev.to · Parsify.tools
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
How to Stream & Flatten 1GB+ JSON to CSV in the Browser Without Memory Leaks
As developers, data engineers, or analysts, we’ve all been there: you download a massive database...

Reddit r/datascience
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Dev Log on Steam Recommender (part 2)
Since the steam sale is live I wanted to post a Dev log on my personal project <a href="https:/
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
WIPRO LAB AT GALGOTIAS
Wipro Centre of Excellence at Galgotias University Continue reading on Medium »

Dev.to · Seenivasan A
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Power BI
In today's data-driven world, organizations collect large amounts of data every day. However, raw...

Dev.to · Vikas Maheshwari
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Star Schema vs Snowflake Schema: Which to Use and When
Star schema vs snowflake schema comes down to one decision — whether you normalize your dimensions. Here's the difference, a worked example, and why the star us

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Beyond Dashboards: Testing Business Hypotheses Through KPI Trees & Diagnostic Analytics
A step-by-step investigation of customer experience using KPI decomposition, diagnostic analytics, and root cause thinking Continue reading on Code Like A Girl
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Julius AI vs ChatGPT for Data Analysis: I Tested Both for a Month (2026)
Julius AI vs ChatGPT for Data Analysis: I Tested Both for a Month (2026) I've been burnt by "revolutionary" data tools before. So when I decided to pit Julius A

Dev.to · Arunkarthick K
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Day 1 of My Microsoft Fabric Learning Journey – Exploring Lakehouses
Today I started my Microsoft Fabric learning journey using the 60-day trial, and my first topic was...
Towards Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Beyond the Straight Line: Choosing Between OLS, Interaction Terms, and Tweedie Regression
Whether you should stick to a classic Ordinary Least Squares regression, introduce interaction terms, or pivot to a Tweedie distribution depends entirely on how

Dev.to · TickDistill
📊 Data Analytics & Business Intelligence
📄 Paper
⚡ AI Lesson
6d ago
Sigma-Normalization: Why Order-Flow Signals Should Be Measured in Standard Deviations, Not Raw Numbers
Sigma-Normalization: Why Order-Flow Signals Should Be Measured in Standard Deviations, Not...

Forbes Innovation
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Running The Numbers On Rising Retail Crime
As analytics tools have gotten more sophisticated, so has loss prevention teams’ understanding of the landscape and the strategies ORC groups favor.

Dev.to · NexGenData
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Asian Market Data Scrapers for Public Business Research
Ask any Western fund manager what their best source is for Bombay Stock Exchange equities, Hong Kong...

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
A Data Science approach to Fleet Preventative Maintenance
A common barrier in data science projects is the perceived need for deep domain expertise before you can start building. Continue reading on Medium »
DeepCamp AI