https://dataandaischool.io/posts/Recent content in Tutorials on Data & AI SchoolHugoen-usMon, 10 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/the-modern-data-stack-mapped-out/Mon, 10 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/the-modern-data-stack-mapped-out/Everything you've learned, in one picture — how data sources, pipelines, storage, quality, modeling, and access all work together in 2026.https://dataandaischool.io/posts/data-quality-what-can-actually-go-wrong/Sun, 09 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/data-quality-what-can-actually-go-wrong/The silent failures that break dashboards and reports — why garbage data means garbage insights, and how to catch problems before they cascade.https://dataandaischool.io/posts/what-is-data-modeling-and-why-it-matters/Sat, 08 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/what-is-data-modeling-and-why-it-matters/How to organize your data like a blueprint — designing warehouse structures so queries are fast, accurate, and make sense.https://dataandaischool.io/posts/structured-vs-semi-structured-vs-unstructured-data/Fri, 07 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/structured-vs-semi-structured-vs-unstructured-data/Why some data fits neatly into tables and some doesn't — and why that difference shapes whether you use a warehouse or a lake.https://dataandaischool.io/posts/what-is-a-data-pipeline-really/Thu, 06 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/what-is-a-data-pipeline-really/From raw data to insights — how a data pipeline connects every step and turns chaos into clarity.https://dataandaischool.io/posts/batch-vs-streaming-processing-explained-simply/Wed, 05 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/batch-vs-streaming-processing-explained-simply/Two ways to process data — all at once, or as it arrives — and why the difference shapes how data systems are built.https://dataandaischool.io/posts/data-warehouse-vs-data-lake-vs-lakehouse-explained-simply/Tue, 04 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/data-warehouse-vs-data-lake-vs-lakehouse-explained-simply/Three places to store your data for analytics — what each one actually is, and why the difference matters.https://dataandaischool.io/posts/elt-vs-etl-whats-the-difference/Mon, 03 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/elt-vs-etl-whats-the-difference/Two ways to move data from source systems into a data warehouse — and why the order of operations matters.https://dataandaischool.io/posts/oltp-vs-olap-explained-simply/Sun, 02 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/oltp-vs-olap-explained-simply/The two types of systems every data engineer works with — what they are, how they differ, and why the distinction matters.https://dataandaischool.io/posts/what-is-data-engineering/Sat, 01 Aug 2026 00:00:00 +0000https://dataandaischool.io/posts/what-is-data-engineering/A beginner-friendly explanation of what data engineers actually do, why the role exists, and how it's different from data analysts and data scientists.