Data Analytics & Business Intelligence

Brazil has one of the most complex crime landscapes in Latin America — but getting clean, queryable...

Introduction No matter what type of Artificial Intelligence workload your business implements, it...

Introduction When you first start working with databases, it can feel like you’re looking...

EdTech products run across very different user journeys, from course discovery to live lessons and assignment uploads. This guide shows which performance metric

Recently I passed the Databricks Certified Professional Data Engineer exam and the Databricks...

Structured JSON logs are easy to produce and hard to analyze at scale. They carry useful context, but...

Az előző blogbejegyzésemben A Cramer-féle asszociációs együtthatót mutattam be egy egyszerű példán...

Q1 2026 numbers are in. 78,557 cuts, nearly half officially attributed to AI. Here's what data engineers actually need to worry about.

Learn data broker opt out basics, a repeatable workflow, a tracking script, and how VPNs fit into a realistic privacy stack.

Most people think of an air quality alert as something that just happens — a notification appears, it...

Google Scholar is the single most important search engine for academic research. Billions of papers...

I’ve been working on structuring cosmetic ingredient data into a JSON dataset. What started as...

Wondering how to interface Apache SeaTunnel with HighGo Database? This article shares hands-on...

Japanese market surveys show 71% GA4 adoption but just 11% reach report automation. Here's what the data actually says about the gap between 'installed' and 'us

When most people think about "safe places to live," they go with gut feeling — maybe they've heard...

Compare Weibull, Crow-AMSAA, and Duane models to analyze failure modes, estimate MTBF, and forecast reliability growth with confidence intervals.

Learn how to query free environmental risk scores for any US zip code, city, or state using a simple REST API. Includes Python, JavaScript, and cURL examples wi

PostgreSQL CDC 240x Faster, Flowfile v0.9.0 ETL, SQLite_EXTRA_INIT Deep Dive ...

Introduction SQL is a defacto language when it comes to interacting with data in Data...

When people talk about SQL index performance tuning, they usually talk about what to do. But tools...

Working with CSV files is annoying. You load a dataset and immediately start wondering: Are there...

Master Matplotlib with 5 interactive labs. Learn installation, import, and how to build professional bar charts, scatter plots, histograms, and custom line plot

Unlock Your Data's Full Potential: The Power of Natural Language Business Analytics Meta...

If you are just starting out with SQL, you have probably already learned how to write a SELECT query,...

Not all SQL index performance tuning tools and best practices solve the same problem. Some are great...

Vannak esetek, amikor két ismérv között nem számolhatunk Pearson-féle lineáris korrelációt. A...

In many data processing scenarios, precision matters more than approximation. While functions like...

Most people checking their air quality app today are looking at a number that represents yesterday's...

Microsoft Power BI is one of the most widely used business intelligence tools available today....

Most SQL performance problems trace back to a handful of knobs, a handful of metrics, and the...

Originally published at norvik.tech Introduction Dive deep into SQL thinking, its...

In our final look at Databricks SQL, we move beyond individual table tweaks to the broader...

If high-performance SQL queries are the engine of your data platform, then your Delta tables are the...

Once you know how to monitor your queries, the next step is taking action. In Databricks SQL,...

Optimization isn't just about writing cleaner SQL; it's about knowing exactly where your compute...

Someone asks for a demo. You need 10,000 users, 30,000 orders, a handful of products, and enough...

When working with SQL, especially in data analysis, you’ll often need to break down complex queries...

Someone searching for a “data extraction tool” might end up comparing Mailparser and Import.io – two...

Understanding subqueries and CTEs (Common Table Expressions) becomes much easier when you can see how...

A practical data architecture for FSMA 204 cold chain traceability — entity, event, telemetry, and evidence layers with IoT sensor integration.

Introduction In today’s data-driven world, businesses are making decisions based on the...

Over the past decade, platforms like Databricks and Snowflake have significantly improved how...

💡 How I Finally Understood Subqueries vs CTEs When I first started learning SQL, I...

Once I added context… I still felt something was missing. Data wasn’t static. It changed over...

When candidates ask, What are the best online resources to improve my SQL skills for assessments?,...

If you work with CSV data, you’ve probably written this code more times than you’d...

When I first started learning SQL, everything felt mechanical. Write a query. Run it. Get...

You can do quite a lot with some of the most popular SQL queries such as SELECT, WHERE, and JOIN. But...