--- title: Governance on Autopilot: Automate Data Governance with... description: Google Cloud describes an open-source Governance Agent project that uses column-level lineage in BigQuery and Knowledge Catalog to automatically propagate... canonical: https://daily.dev/posts/governance-on-autopilot-automate-data-governance-with-lineage-qzovmogzz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Governance on Autopilot: Automate Data Governance with Lineage | daily.dev og:description: Google Cloud describes an open-source Governance Agent project that uses column-level lineage in BigQuery and Knowledge Catalog to automatically propagate... og:url: https://daily.dev/posts/governance-on-autopilot-automate-data-governance-with-lineage-qzovmogzz og:image: https://api.daily.dev/og/posts/qzovMOGzz.png og:image:alt: Governance on Autopilot: Automate Data Governance with Lineage og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Governance on Autopilot: Automate Data Governance with Lineage **[Google Cloud](https://daily.dev/sources/gcp)** · 11 min read · 0 upvotes · 0 comments ## Summary Google Cloud describes an open-source Governance Agent project that uses column-level lineage in BigQuery and Knowledge Catalog to automatically propagate descriptions, business glossary terms, PII policy tags, and trust/data quality scores from upstream tables to downstream views. When lineage is incomplete, the agent can ground its suggestions in user-supplied documents or trigger an AI-driven Knowledge Catalog Data Documentation scan to infer relationships. All propagations pass through a confidence threshold and a human preview step before being applied, and the tool ships with both a dashboard and a CLI. A VodafoneThree UK Datahub customer testimonial estimates the approach could cut cataloguing effort by up to 75%. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How can I automatically propagate PII tags to downstream BigQuery tables using lineage? An open-source Governance Agent project traces column-level lineage from an upstream PII-tagged column and recommends the same tag downstream, along with a summary of current read access and masking rules. It also checks whether the transformation is a straight pull versus an aggregation or anonymization, so it avoids stamping PII tags on data that no longer carries that risk. _Developers wiring up automated governance pipelines can follow ongoing lineage tooling coverage on daily.dev._ ### How does an AI governance agent avoid hallucinating PII classifications when no lineage exists for a table? When lineage is missing, the agent only marks a column as PII if a supplied document explicitly states it, such as a 'PII: Y' flag or a named sensitivity section, and refuses to infer sensitivity from column names alone. If a column isn't clearly defined in the provided document, the agent is instructed to say so and stop rather than guess. _Teams weighing AI-assisted data classification tools can track trustworthy automation patterns on daily.dev._ ### What reduction in cataloguing effort can automated metadata propagation achieve for a large undocumented data estate? VodafoneThree UK Datahub estimated that combining cataloguing, lineage, and automated metadata propagation through the Data Steward Agent could reduce cataloguing effort by up to 75%, while improving data discoverability, trust, and AI readiness across their platform, by letting governance effort concentrate on source datasets and scaling via lineage. _Anyone evaluating governance automation ROI can follow real-world adoption stories via daily.dev._ ## Similar posts on daily.dev - [18 Best Data Lineage Tools Compared \(2026\)](https://daily.dev/posts/18-best-data-lineage-tools-compared-2026--xuknx4shy) · Decube · 1 upvotes · 0 comments - [Exploring the Data Engineering Agent in BigQuery](https://daily.dev/posts/exploring-the-data-engineering-agent-in-bigquery-jh5qckdfs) · Google Cloud · 0 upvotes · 0 comments - [Governance beyond security: knowledge, context & ontology on the lakehouse](https://daily.dev/posts/governance-beyond-security-knowledge-context-ontology-on-the-lakehouse-ohjifsyku) · databricks · 1 upvotes · 0 comments - [Data Lineage: The Foundation of Enterprise Data Infrastructure \(2026 Guide\)](https://daily.dev/posts/data-lineage-the-foundation-of-enterprise-data-infrastructure-2026-guide--nedcj5bee) · Decube · 0 upvotes · 0 comments - [Lineaje Adds Ability to Automatically Apply Governance Policies to AI Components](https://daily.dev/posts/lineaje-adds-ability-to-automatically-apply-governance-policies-to-ai-components-p2fuukdxl) · DevOps.com · 1 upvotes · 0 comments --- Tags: [#gcp](https://daily.dev/tags/gcp), [#big-data](https://daily.dev/tags/big-data), [#data-engineering](https://daily.dev/tags/data-engineering), [#google-bigquery](https://daily.dev/tags/google-bigquery) [View this post on daily.dev](https://daily.dev/posts/governance-on-autopilot-automate-data-governance-with-lineage-qzovmogzz) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Governance on Autopilot: Automate Data Governance with Lineage","url":"https://daily.dev/posts/governance-on-autopilot-automate-data-governance-with-lineage-qzovmogzz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/governance-on-autopilot-automate-data-governance-with-lineage-qzovmogzz"},"datePublished":"2026-08-18T16:13:14.550Z","dateModified":"2026-08-18T16:27:18.874Z","description":"Google Cloud describes an open-source Governance Agent project that uses column-level lineage in BigQuery and Knowledge Catalog to automatically propagate...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9df795f90d3290a29c3b5ccad1c3e312?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9df795f90d3290a29c3b5ccad1c3e312?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Google Cloud","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Google Cloud","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/gcp","url":"https://daily.dev/sources/gcp"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/governance-on-autopilot-automate-data-governance-with-lineage-qzovmogzz","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"gcp,big-data,data-engineering,google-bigquery","timeRequired":"PT11M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Google Cloud","item":"https://daily.dev/sources/gcp"},{"@type":"ListItem","position":3,"name":"Governance on Autopilot: Automate Data Governance with Lineage"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/governance-on-autopilot-automate-data-governance-with-lineage-qzovmogzz#faq","mainEntity":[{"@type":"Question","name":"How can I automatically propagate PII tags to downstream BigQuery tables using lineage?","acceptedAnswer":{"@type":"Answer","text":"An open-source Governance Agent project traces column-level lineage from an upstream PII-tagged column and recommends the same tag downstream, along with a summary of current read access and masking rules. 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