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The first multimodal open catalog for data and AI
Guide

Introducing Unity Catalog Managed Tables

UC managed tables are discovered and accessed through Unity Catalog, not by filesystem paths. This is a fundamental change especially with how Delta Lake tables are discovered, read, and written to. However, this change to the way Delta Lake tables are managed is an evolution towards more catalog-centric architectures like Apache Iceberg, now both open table formats can share the same design principal where the catalog is now the authoritative source of governance, discoverability, and for table state.

March 3, 2026
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Introducing Unity Catalog 0.3.1 Release

This release delivers a new unified Java client API with built-in OAuth support, retries, and resilient authentication out of the box. Automatic credential renewal across AWS, Azure, and GCP means long-running jobs no longer break when temporary tokens expire. And the headline feature — catalog-managed Delta tables (experimental) — lets Unity Catalog centrally coordinate storage and commits, so multiple engines like Spark, DuckDB, and Polars can safely read and write the same tables without conflict.

Guide
December 12, 2025

Building the Medallion Architecture with Unity Catalog

Unity Catalog + Medallion (Bronze/Silver/Gold) gives a clear 3-level structure with fine-grained access, centralized metadata, and lineage.

Guide
November 6, 2025

Avoid Data Silos with Unity Catalog

Data silos split data across tools, creating duplication, inconsistency, and security gaps; Unity Catalog centralizes governance and access so teams share trusted data for analytics and AI.

Guide
September 23, 2025

How to use the Unity Catalog REST API

This article explains how you can use the Unity Catalog REST API to store and manage your data and AI assets.

Guide
August 5, 2025

Working with Functions in Unity Catalog

Learn how to create, manage, and secure reusable functions in Unity Catalog. This guide explains how to store logic in your data catalog for reliable, reproducible code, making it ideal for ML and AI workloads. Explore how to work with functions using the CLI, REST API, and integrate them with popular AI tools like LangChain and LlamaIndex.

Guide
July 25, 2025

Unity Catalog and LlamaIndex

Using Unity Catalog with LlamaIndex helps you organize and use your data with AI. You can build LLM-powered systems while keeping your data safe and easy to manage.

Guide
June 25, 2025

Unity Catalog and OpenAI

This article explains how you can use Unity Catalog with OpenAI to build faster and safer AI workflows.

Guide
June 17, 2025

Unity Catalog: Managed vs External Tables

This article explains the difference between managed and external tables and shows you how to work with both types of tables in Unity Catalog (UC).

Guide
May 27, 2025

Unity Catalog for AI

This article explains how you can use Unity Catalog for AI use cases. Unity Catalog integrates with popular GenAI tools like LangChain, LlamaIndex, OpenAI, Anthropic, and many others to make it easy to manage data, functions, and access control across AI platforms.

Guide
May 5, 2025
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Open Sourcing Unity Catalog

We are excited to announce that we are open sourcing Unity Catalog, the industry’s first open source catalog for data and AI governance across clouds, data formats, and data platforms.

News
June 13, 2024

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