20 articles and counting

Data & AI for builders and decision-makers.

Field notes on data engineering, applied AI, and the decisions behind them — for engineers who ship pipelines and the leaders who bet budgets on them.

20 in-depth articles Last published Sep 26, 2026 Free tools at tools.techedge.in

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Illustration for: CTEs vs. Subqueries vs. Temp Tables: When to Use Which
Data engineering

CTEs vs. Subqueries vs. Temp Tables: When to Use Which

CTEs vs subqueries vs temp tables explained — readability, materialization behavior across Postgres/Snowflake/BigQuery, recursive CTEs, and a practical decision framework.

Illustration for: Data Modeling in Practice: Grain, Facts, Dimensions, and Keys
Data engineering

Data Modeling in Practice: Grain, Facts, Dimensions, and Keys

A hands-on guide to dimensional data modeling — declaring grain, designing fact and dimension tables, surrogate keys, slowly changing dimensions, and star vs. one big table, with dbt examples throughout.

Illustration for: Apache Iceberg: A Practical Guide to the Open Table Format
Data engineering

Apache Iceberg: A Practical Guide to the Open Table Format

A practical guide to Apache Iceberg — the metadata layers, hidden partitioning, schema evolution, snapshots and time travel, branching, copy-on-write vs merge-on-read, catalogs, and the maintenance jobs nobody warns you about.

Illustration for: dbt Materialization Strategies: A Practical Guide With Examples
Data engineering

dbt Materialization Strategies: A Practical Guide With Examples

A practical guide to every dbt materialization strategy — view, table, incremental, ephemeral, snapshots, and materialized views — with examples for append, merge, delete+insert, insert_overwrite, and microbatch.

Illustration for: Why SQL Is the One Non-Negotiable Skill for Every Data Analyst
Skills & learning

Why SQL Is the One Non-Negotiable Skill for Every Data Analyst

SQL isn't just another line on a data analyst's resume — it's the language the entire data world runs on. Here's why it's mandatory, not optional, for every data analyst and data enthusiast in 2026.

Illustration for: What Is dbt, and Why Do Analytics Engineers Love It?
Data engineering

What Is dbt, and Why Do Analytics Engineers Love It?

An introduction to dbt (data build tool) — what it actually does, how it turned raw SQL into tested, version-controlled, documented software, and why it became the tool analytics engineers build their entire workflow around.

Illustration for: Breaking Into Data: A Career Switcher's Guide to Every Path (2026)
Career growth

Breaking Into Data: A Career Switcher's Guide to Every Path (2026)

A field guide to data careers for people switching in from other fields — Data Analyst, Engineer, Scientist, Analytics Engineer, ML/AI Engineer — with 2026 India salary data, a 12-month roadmap, and free resources.

Illustration for: We Built a Free SQL Formatter. Here's Why.
Tooling

We Built a Free SQL Formatter. Here's Why.

A look at why we built a free, browser-only SQL formatter at tools.techedge.in — what SQL formatting actually does, why it matters for data teams, and what we're building next.

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