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docs(de-pro): restructure to the Oct 9 2026 exam (9 domains, 60 questions) - #35
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Renames the topic folders to match the 9 sections of the Oct 9, 2026 exam guide, in the same order (01 Developing Code ... 09 Data Modeling). The old Data Sharing and Federation and Data Transformation folders are removed; their files now live under Ingestion, Developing Code and Data Manipulation. Relative links are rewritten across the repo.
Lakeflow Declarative Pipelines -> Lakeflow Pipelines, Databricks Asset Bundles -> Declarative Automation Bundles, Delta Sharing -> OpenSharing, Data Modelling -> Data Modeling. Link targets and URLs are unchanged.
…actice questions New topic files for skills added in the Oct 9, 2026 guide: Python project structure and dependencies, UDFs and UC functions, Lakeflow Connect database CDC, Clean Rooms, VARIANT, AI functions, Lakehouse alerts, managed tables and predictive optimization, disk caching, ABAC with governed tags, anonymization and data purging, tags and comments, job repair, and dimensional modeling with metric views. Existing files for OpenSharing, Lakehouse Federation, Lakeflow Pipelines, AUTO CDC, CDC, system tables, the SDK, bundles and Git folders are updated and checked against docs.databricks.com. Compute is split into two parts. Topic READMEs now map each exam-guide bullet to the files that cover it, and the nav lines are regenerated. Practice questions are regrouped into 9 section files (73 existing + 82 new 2026-blueprint questions) and the JSON bank is rebuilt.
…ions Each mock question now sits under its Oct 9, 2026 section heading, so the practice-quiz mock banks report 9 domains. Debriefs get a 9-section resource map, a per-question map with descriptive link text (fixes the MD059 lint errors) and per-section counts. Mock READMEs show the counts and drop the old 10-domain table.
…xam guide Cert README: Oct 9, 2026 exam overview (60 scored questions, English only), 9-domain pie and Study Topics table, a 'What changed' callout, a note on the cert page still showing the old 10-domain layout, a product-name callout, and an updated progress tracker and course list. Resources: exam tips, final review, official links and the Lakeflow Pipelines cheat sheet are rewritten for the 9 sections and current product names (AUTO CDC, OpenSharing, Declarative Automation Bundles). Fixes wrong claims about UC grants not reaching future tables, DENY, dev-mode expectations, and full-recompute materialized views.
Moves Best Practices after Common Issues in unit-testing part 2, adds the abstract callout to access control, and fixes a doubled 'Lakeflow Pipelines pipeline' phrase. Lint, link check and the practice build are clean.
Checked all 45 skill bullets in the topic READMEs against the Oct 9, 2026 PDF (verbatim match, each mapped to at least one file) and spot-checked CREATE POLICY and metric view YAML syntax against the docs.
Swaps the correct choice of 28 B-keyed questions with another choice so the 155-question bank is A 39 / B 39 / C 39 / D 38 (was A 34 / B 67 / C 33 / D 21). Correct Answer lines and letter references in the explanations are updated; question text, IDs and mock exams unchanged.
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Summary
Restructure Data Engineer Professional for the new Oct 9, 2026 exam: 9 domains (previously 10), 60 scored questions, English only per the PDF. Every one of the 45 PDF skill bullets is quoted in its topic README's coverage table and linked to the files that teach it. The PR adds 14 topic files for the new skills and fixes several factual errors.
Type of change
Which certification(s) does this touch?
Blueprint / source alignment
CLUSTER BY AUTO/ predictive optimizationCREATE STORAGE CREDENTIALstatementFolder map
README & CLAUDE.md sync
README.mdREADME.md,CLAUDE.md, andCHANGELOG.mdupdates for every cert are batched into the shared-content PR of this Oct 2026 refresh series.3-round self-review
Verification
markdownlint: 0 errors. The regenerated debriefs also fix 266 MD059 errors that were already there.python3 practice/build.py --cert data-engineer-professional:Anything reviewers should know
shared/,labs/,learning-paths/,images/). Merge it before the DE Associate, Data Analyst, and shared PRs of this series; those will be rebased on top.USING ICEBERGMVs (Preview).🤖 Generated with Claude Code