Data Analytics & Business Intelligence

Building ETL pipelines is no longer just about transferring data from one system to another. Modern...

DatAasee Tech Stack Canvas Setting: Many distributed data and metadata...

I've been building a system called Nexus for the past few months. It's a personal data platform: 54...

El 13 de abril de 2026, DuckDB Labs liberó la versión 1.0 de DuckLake, un formato de data lake con backward-compatibility garantizada que rompe con la

Most Airflow DAGs have zero data quality checks. The pipeline runs, data lands in the warehouse, and...

If you've ever watched a business analyst wait three days for a data team to answer a simple question...

Disclaimer: This guide covers extracting publicly accessible data. Always review a site's robots.txt...

Introduction to Python for Data Analytics What is Data Analytics? Data...

What is a data warehouse? A data warehouse is a central repository of information that can be...

Recently, I started building KPollZone, a web platform focused on Kerala election analytics, live...

Google L4 hits $307K. Generalists can't get callbacks. The 2026 DE salary gap is widening fast , and most engineers don't know which side they're on.

If you have spent time working inside a data team, you already know how a typical Tuesday looks. A...

Understanding AI in Modern Data Analytics: A Comprehensive Guide The data analytics...

Update: Automating Time Series Exploration with tseda 📈 A while back, I shared tseda, a...

Over the next few posts, I’ll break down understanding analytics pipeline using: • Databricks •...

Our team hit a familiar Snowflake paradox: slower ETL runs arrived at the same time as FinOps alerts...

There is no shortage of frameworks for thinking about data quality. There is, however, a significant...

Learn how to use SQL views to simplify complex queries, secure sensitive data, and keep your database logic DRY — with practical examples and gotchas to avoid.

As a part‑time forex trader and full‑time tinkerer, I wanted a dashboard that could show me, in real...

Bài viết gốc được xuất bản tại ITPrep - Cẩm nang & Cheat Sheet Phỏng vấn IT. Anh em dev ngồi gõ...

I have been working with ADF in production for 5 years. Most irritating errors are not in Pipeline...

Most interview prep teaches you what to know. Not how to think. That's a problem, because data...

Introduction Imagine drawing water from a muddy river. You would never scoop a glass of...

Every data project starts with excitement. Then comes: missing values duplicate rows inconsistent...

This is Part 3 of a 15-part Apache Iceberg Masterclass. Part 2 covered the metadata structures of all...

La semana pasada pasé 40 minutos arreglando una hoja de cálculo que debería haberme tomado 5 minutos...

In the lifecycle of a scaling technology company, manual data entry is a silent killer of...

Celebrating a new release of the 1154th most download R package!

Most engineers reach for Spark or BigQuery the moment they hear "10 million records." I did too —...

Introduction I recently saw a question on Reddit that stopped me in my tracks: "Do you...

Traditional vs AI-Powered Predictive Analytics: Which Approach Fits Your E-commerce...

Most B2B teams budget for data acquisition. Few budget for data preservation. The acquisition cost is...

A practical guide to develop robust, testable data connectors using the Singer spec and Airbyte framework for scalable ingestion.

What Every Corporate Lawyer Should Know About Data-Driven Decision Making Corporate law...

A practical guide to SQL string functions — TRIM, CONCAT, REPLACE, SUBSTRING, UPPER/LOWER, and more — with real-world data cleaning scenarios you'll actually en

TL;DR — Off-the-shelf Amazon research tools hide their decision logic behind a single "opportunity...

A case study in identity resolution, multi-source data stitching, and why vertical infrastructure...

5 Apify webhook patterns that turn one-off scrapers into reliable data pipelines This...

Most organizations have some version of a data quality framework. Fewer have one that works. The gap...

I want to start with a number: $140,000. That's how much a single misconfigured scheduled query cost...

Serve multi-region analytics — views by country, RTL vs LTR content split, peak watch hours across N

As my journey in becoming a competent data analytics, my SQL knowledge continues to deepen and as a...

When I first came across ETL vs ELT, it honestly felt like one of those “same thing, different...

This section explores how MongoDB is used in the public sector across EMEA, covering data platforms,...

If you use dbt, you probably have some tests. A few not_null checks, maybe unique on your primary...

We talk a lot about “data-driven decisions”, but that usually hides three separate layers: Data...

When stepping into the world of data engineering, Apache Airflow is likely one of the first tools you...

The UAE real estate market gets covered endlessly in terms of property prices and transaction...