A Arthur Reis
Blog

Writing about data & AI

Technical articles on data engineering, Databricks and AI.

Jun 01, 2026

Community Connectors in Databricks

If you have ever worked with data ingestion at scale, you know that a considerable part of the effort is not in transformation or modeling, but in…

Data Engineering Databricks
Jun 01, 2026

Secure authentication in Microsoft Fabric notebooks with Workspace Identity and Connection Objects

If you work with notebooks in Microsoft Fabric, you have probably hit the classic situation: during development everything works…

Databricks Data Engineering
May 07, 2026

VOID Columns in Delta Lake

Why a typeless column shows up in your Delta schema, what it breaks, and how to fix it idempotently.

Delta Lake Databricks Spark
May 06, 2026

The next generation of Databricks Genie

Databricks Genie is no longer just a data chatbot. With the recent updates announced by Databricks, the product is positioning itself as something…

AI Databricks Data Engineering
May 05, 2026

AI/BI Dashboards and DABs: the lesson I almost learned the hard way

There is a behavior in Databricks that looks like a bug but is a feature, and that almost no one discovers until they lose a dashboard in production.

Data Engineering Databricks
May 05, 2026

DABs Python Mutators: how to guarantee consistent configuration across 50 jobs without copy-paste

As a Databricks project grows, the number of jobs in the bundle grows with it. Ten jobs become twenty, twenty become fifty. And along with the…

Data Engineering Databricks
May 04, 2026

Databricks Apps: building data applications without leaving the Lakehouse

For a long time, the lifecycle of a data project had a very clear split: you built your pipelines, transformations, and models inside a platform like…

Databricks Data Engineering Data Science
May 04, 2026

Liquid Clustering in Databricks: the evolution of OPTIMIZE + ZORDER in Delta Lake

If you have worked with Delta Lake in Databricks for a while, you have certainly come across the OPTIMIZE + ZORDER BY combo to physically organize…

Data Engineering Databricks Data Science
Apr 26, 2026

How to build a naming governance agent for Databricks Unity Catalog

Naming conventions are one of those topics every data team agrees on in theory and ignores in practice. The rule exists, the document is in Confluence…

Databricks Data Engineering
Apr 26, 2026

Evolving agentic applications in Microsoft Fabric: automated deployment and integration with Data Agents

Over the last few months, I have closely followed how Microsoft Fabric has accelerated its evolution to compete directly in the AI and agents space.…

Microsoft Fabric AI Data Engineering