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
5d ago
10 SQL Indexed View Techniques for Faster Reporting and Aggregation Workloads
Indexed view strategies that accelerate aggregations and reduce query overhead in reporting workloads Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
The Hotel Pricing Trap: Why Raising Your ADR Might Actually Destroy Your Profits
How to mathematically calculate the impact of price elasticity and mixed expenses on your hotel’s net operating income. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Your outlook towards Excel is making you miserable
For data folks who are stuck with MS Office. Continue reading on DataAutodidact »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
The Complete Data Science Process: A Step-by-Step Guide for Beginners and Professionals-IABAC
Data has become one of the most valuable assets for organizations across industries. Companies rely on data-driven insights to improve… Continue reading on Medi

Dev.to · Muhammad Bin Nazeer
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Building a Sports Data Pipeline: Lessons from Scotland primed for game of their lives against fallible Brazil
Building a Sports Data Pipeline: Lessons from Scotland primed for game of their lives...
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Why Your Apache Iceberg Tables Are Slowing Down (And How to Fix It)
Continue reading on Medium »

Medium · LLM
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Tinkering with Databricks: Claude Desktop, MCP, and a Clinical Intelligence Server
When Claude Desktop becomes the interface, MCP becomes the bridge, and Databricks stays the governed data backbone, the shape of a… Continue reading on Medium »

Dev.to · manja316
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
What 86 Days of Clean Prediction-Market History Actually Shows
I archived 17.2M Polymarket price snapshots on one Mac. Here's what the resolved data says about whether the crowd is actually calibrated — and how to check it

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
【UoM】 Health Data Science 25/26 — Semester 2 (All Optional)
In Semester 2, every module is optional. You’ll choose 4 out of 11 available units. The course list was shared in mid-November, and you’ll… Continue reading on

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
The Math Behind “The House Always Wins”
Breaking down the hidden probabilities on the casino floor. Continue reading on Towards AI »

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
The Allocation Problem No Spreadsheet Solves on Its Own
How data science turns resource allocation from an argument about opinions into a decision you can actually defend. Continue reading on Medium »

Medium · LLM
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Last Summer I Wrote Code to Analyze the Titanic Dataset.
Last summer, I was learning data science the way most people do. Pick a popular dataset. Write some pandas code. Run a few plots. Call it… Continue reading on M

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Building Production-Grade Delta Lake Pipelines with Apache Spark on Databricks
A deep dive into the medallion architecture, Delta Lake internals, Z-ordering, and optimized Spark writes — the patterns that separate… Continue reading on Code
AWS Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
AI-powered BI with Snowflake and Amazon Quick
In this post, you will learn how to build an end-to-end integration between Snowflake semantic views and Amazon Quick. The sample data is user review data for a

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
How Socioeconomic Factors Influence Chronic Disease Outcomes
Chronic disease management is influenced by far more than medical treatment alone. Research has consistently shown that factors such as… Continue reading on Med

Dev.to · Pulsebit News Sentiment API
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Your Pipeline Is 29.2h Behind: Catching World Sentiment Leads with Pulsebit
Your Pipeline Is 29.2h Behind: Catching World Sentiment Leads with Pulsebit We recently...

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Managing Relational Bottlenecks: A Technical Audit of Advanced Academic Database Support Systems
An architectural evaluation of external infrastructure, dialect precision, and digital footprint protection for computer science and data… Continue reading on M

Hackernoon
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Building a Production-Ready Snowflake MCP Server
MCP lets Claude query Snowflake directly in real time. This guide covers three deployment patterns (stdio, SSE, cloud-hosted), RSA key-pair auth, a minimal-perm
Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
The Privacy Bill Always Comes Due — Joseph Sides
Many companies still treat privacy and data protection like optional overhead. They will spend aggressively on marketing, customer… Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
How I Prepared for a Data Science Aptitude Test for a German Master’s Program
What is a Data Science Aptitude Test & Which Programs Require It? Continue reading on CodeToDeploy »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Baidu’s Unlimited OCR : Beats DeepSeek OCR, Parses entire book in one go
How to use Baidu’s Unlimited OCR Continue reading on Data Science in Your Pocket »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
What is Ontology — the secret sauce to supercharge the data retrieval?
Demystifying Ontology, & comparing it with normal data retrieval. This is also a comparative study of Graph vs. Non-Graph based retrieval. Continue reading on M
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data Modelling, Joins, Relationships and Schemas in Power Bi.
Often not, most beginners assume that having clean data, visually appealing charts, and well-thought-out dashboards is the most important part of data analysis,
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data Pipelines: Dynamic Multi-Level Parallelism: A YAML-Driven Tool/Framework
By Shiva Shankar Reddy Kondakindi Sr Principal Engineer, TLCP — Data & AI Creator, Architect, and Primary Contributor of Hubble Continue reading on Medium »

Dev.to · Myroslav Martsin
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Most CSV libraries go one way or skip types. csv-pipe does both, typed, and parses several times faster than papaparse. Live playground in the post.
csv-pipe: read and write CSV in TypeScript, several times faster than papaparse ...
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Why Lead Taxonomy Must Come Before Machine Learning: A Step-by-Step Analytics Guide
This article is the second article in a series of articles documenting my journey in implementing data analytics in an organization. Continue reading on Medium

Dev.to · Jitendra Devabhaktuni
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
SyntheholDB for Pharma & Clinical Research Teams: Stop Letting Data Access Kill Your Pipeline
Published on dev.to · Target audience: Pharma engineers, CROs, clinical data architects,...
Techpoint Africa
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Public data is a national asset, not a revenue shortcut
A trusted data economy will not be built by selling what citizens submitted in good faith. It will be built by proving that Kenya can turn data into public valu
Dev.to AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
The Role of AI-Powered Analytics in Improving Operational Efficiency
Organizations today generate vast amounts of operational data from business applications, customer interactions, supply chains, and internal processes. While da

Medium · AI
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Why Data Quality Matters More Than Artificial Intelligence Models
Artificial Intelligence has transformed the way organizations analyze information, automate processes, and make strategic decisions. While… Continue reading on

Dev.to · Review Laptop
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data Science Workload: Giới hạn RAM trên Dell Pro Max 14 MC14250
Trong lĩnh vực Data Science, việc quản lý tài nguyên hệ thống là một bài toán cân não. Khi bạn chạy...

Dev.to · Stephen Omengo
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Understanding Subqueries and CTEs in SQL: A Complete Guide
Working with relational databases often requires breaking down complex problems into manageable...

Dev.to · Young Odhiambo
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Data Modeling, Joins, Relationships and Schemas
Data Modeling Data modeling is the process of creating a structured and visual...

Dev.to · Kevin Alemán
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
The Apple Books data model
Apple Books stores everything about your reading on disk, in plain SQLite. Your books, your...

Dev.to · VICTAL
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Buscando o primeiro emprego na área de TI.
Estou procurando minha primeira oportunidade na área de TI, eu sou Analista de Dados Júnior, minha...

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
The Ultimate Guide to Science and Math/CS YouTubers
This list is years in the making. All of these channels will help change the way you think. The lowest tier is A! Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
What Three Years of AQI Data Reveals About India’s Air Quality
How seasons, regions, and pollutants shaped air quality across 291 Indian cities from 2022 to 2025 Continue reading on The Quantastic Journal »

Dev.to · Aditya Somani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Snowflake vs Databricks, BigQuery vs Redshift? The 2026 Guide to Right-Sizing Your Data Platform
TL;DR Big data platforms like Snowflake and BigQuery impose high pricing floors, like...
InfoQ AI/ML
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Presentation: Challenging Google Analytics: Building a Scalable, Cost-Effective User Tracking Service
Alina Krasavina explains how Delivery Hero successfully deprecated Google Analytics and migrated to an internal user tracking platform. She discusses how a simp

Dev.to · Malawige Inusha Thathsara Gunasekara
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Stop Funding History: Building a Demand Prediction App to Optimize Trade Spend
Let’s be honest: in the FMCG (Fast-Moving Consumer Goods) space, trade marketing budgets are almost...

Dev.to · ersajay
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
By the Numbers: The Fascinating Data Behind 100 Million Nebility Customers
Behind every great brand is a story. But behind every great global brand is data — millions of data...

Dev.to · Venus-Kennedy
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Why Statistics is the Invisible Backbone of Data Science
INTRODUCTION In the hype-fueled world of tech, data science is often painted as a futuristic...

Dev.to · manja316
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
17 million Polymarket price snapshots, collected on one Mac for $0/month
Most prediction-market datasets you find online are a one-time dump someone scraped, posted, and...

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Web Scraping with APIs: A Complete Tutorial with Real Examples
A Hands-On Python Guide to Extracting Clean Data Efficiently Continue reading on Data Engineer Things »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
The Month-End Close is Broken: How Modern Accountants Are Automating Financial Document Extraction
Why Are Highly Trained CPAs Still Doing Manual Data Entry? Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Connect Excel to a Database with Tens of Millions of Rows?
How do you connect Excel to a databases with tens of millions of rows.. and GBs of data? Continue reading on Medium »

Dev.to · circobit
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Du Tableau HTML aux Instructions SQL INSERT en Un Clic
Vous avez trouvé des données sur un site web. Vous en avez besoin dans votre base de données. Le...

Dev.to · Edge Lab
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Host Nation Advantage: Do USA, Canada, and Mexico Get a Statistical Boost?
Here's a stat that'll surprise you: since 1930, host nations win the World Cup 26% of the time—nearly...
DeepCamp AI