# Building an Operational Ontology: An E-Commerce Walkthrough

DevFeed: [Building an Operational Ontology: An E-Commerce Walkthrough](<https://devfeed.tech/articles/building-an-operational-ontology-an-e-commerce-walkthrough-18253.md>)

Original publisher: [Read original article](<https://www.dataengineeringweekly.com/p/building-an-operational-ontology>)

Author: Togo YAMANAKA

Published: 2026-08-26T14:29:30Z

Content type: tutorial

Language: en

Sources: [Data Engineering Weekly](<https://devfeed.tech/sources/data-engineering-weekly.md>)

Topics: [semantic-layer](<https://devfeed.tech/topics/semantic-layer.md>), [SQL](<https://devfeed.tech/topics/sql.md>), [TypeScript](<https://devfeed.tech/topics/typescript.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [Databases](<https://devfeed.tech/topics/databases.md>)

Tags: [customer](<https://devfeed.tech/tags/customer.md>), [data-pipeline](<https://devfeed.tech/tags/data-pipeline.md>), [implementation](<https://devfeed.tech/tags/implementation.md>), [integration](<https://devfeed.tech/tags/integration.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [semantic-layer](<https://devfeed.tech/tags/semantic-layer.md>), [sql](<https://devfeed.tech/tags/sql.md>), [typescript](<https://devfeed.tech/tags/typescript.md>)

## AI overview

A walkthrough builds an operational ontology over integrated e-commerce order data from two systems with different schemas and status encodings. It models customers, orders, products, and relationships, then introduces named actions, business rules, and write-back to systems of record.

## Source excerpt

The write side of the ontology conversation: named actions, business rules, and write-back to the systems of record -- a pattern already running at enterprise scale.