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Knowledge Base

Articles, guides, and annotated talks on data contracts, data products, and data governance from the team at Entropy Data.

Data Ownership: The 4 Principles
Article

Data Ownership: The 4 Principles

Data ownership is probably the most unsolved problem in data management. Learn the 4 principles: you build it, you own it; publish data products; enforce data contracts; be your first customer.

The EU AI Act in Financial Services
Article

The EU AI Act in Financial Services

Since July 2026, BaFin supervises AI systems in the German financial sector. Most of what banks and insurers must prove concerns data: origin, quality, meaning, and permitted use. How data contracts, semantics, and governed access get you there.

Using Git with Entropy Data
Guide

Using Git with Entropy Data

Learn how to use Git with Entropy Data: Git as the leader, Entropy Data as the leader (trunk-based), and Entropy Data as editor with PR workflows.

Open Standards for Data Products
Talk

Open Standards for Data Products

Annotated TDWI München 2026 talk by Dr. Simon Harrer (Entropy Data) on the open standards for data products (ODCS, ODPS, and OSI), the open-source tooling around them, and a live demo of a coding agent building a data product from a contract.

A Data Marketplace is What Your Agent Needs
Talk

A Data Marketplace is What Your Agent Needs

Annotated DATA Festival 2026 talk by Dr. Simon Harrer (Entropy Data) on why AI agents need a data marketplace, to read data through governed tools and to build new data products, with two live demos.

Data-first or Contract-first?
Talk

Data-first or Contract-first?

Annotated talk by Jochen Christ (Entropy Data) on two paths to building a data product: the traditional data-first route and a contract-first route, with data contracts, ODCS, the Data Contract CLI, and a coding agent that builds the product from the contract.

Sync your Power BI workspaces with Entropy Data
Feature

Sync your Power BI workspaces with Entropy Data

A first-class Microsoft Power BI integration for Entropy Data. Sync Fabric workspaces, govern every item, align your semantic layer, and publish data products straight to Power BI.

Data Product Builder
Feature

Data Product Builder

Contract-driven development for data products: write or extend an ODCS data contract, then ask Claude Code, OpenAI Codex, or GitHub Copilot CLI to implement it. Works for new data products and for changes to existing ones.

Open Standards for Data Mesh
Talk

Open Standards for Data Mesh

Annotated talk by Dr. Simon Harrer at Data Mesh Belgium Meetup #7 in Leuven on open standards for data mesh: ODCS, ODPS, and OSI.

Chat with your Enterprise Data
Talk

Chat with your Enterprise Data

Annotated talk by Dr. Simon Harrer at Purdue University on how AI can chat with enterprise data while enforcing data governance policies — using data products, data contracts, semantics, and access agreements as metadata.

MCP: Connect AI Clients with Business Data
Feature

MCP: Connect AI Clients with Business Data

Enable AI clients like Claude, ChatGPT, and Microsoft Copilot to securely access your business data products with full data governance through Entropy Data's MCP server.

Data Catalog vs Data Marketplace
Article

Data Catalog vs Data Marketplace

Traditional data catalogs have long been the primary solution for managing data assets. Modern data architectures build on data products with clear ownership, well-defined data contracts, and a focus on the needs of data consumers, brought together into an enterprise data marketplace.

Building Data Products with dbt
Guide

Building Data Products with dbt

How to implement data products using dbt: project structure, output ports, data contracts, testing, and integration with a data product marketplace.

What is a Data Product?
Basics

What is a Data Product?

A data product is a logical unit that contains all components to process and store domain data for analytical or data-intensive use cases and makes them available to other teams via output ports

What is a Data Contract?
Basics

What is a Data Contract?

A data contract defines ownership, structure, semantics, quality, and terms of use for data exchange. Learn about the Open Data Contract Standard (ODCS) with examples.

Open Data Contract Standard (ODCS)
Basics

Open Data Contract Standard (ODCS)

Learn the Open Data Contract Standard (ODCS), an open YAML spec for data contracts governed by Bitol. Covers its structure, schema, data quality and examples.