# Schema Drift Regression Dataset

> Test schema-change handling with versioned synthetic regression cases and explicit evaluation expectations for the formats actually included.

## Product

- [Product page](https://zentrafoundry.com/product/schema-drift-regression-dataset/)
- [Catalogue guide](https://zentrafoundry.com/llms.txt)

## Description

Give schema-change checks a repeatable test baseline. This synthetic dataset is intended for evaluating the drift scenarios documented in the release, helping teams compare how a parser or validation workflow behaves before and after a code change. What this download contains The package does not monitor your live sources and does not cover every possible schema or breaking-change class. Actual fixture formats, case definitions and expected outcomes establish the supported scope. Synthetic inputs should not be presented as measured production incidents. Working with this edition Review the case inventory, run supported fixtures through your own pipeline and save the benchmark version with the results. Investigate mismatches between expected and observed behaviour without changing the reference expectation merely to obtain a passing run. Product questions Will it monitor my production APIs automatically? No. It is a test dataset, not a hosted or continuous schema-monitoring service. Does it cover every data format? No such claim should be made. Use the release’s actual fixture and format inventory.

## Dataset edition

- Edition: zf-060-2026-1-dd7cc659f88a
- Files: CHANGELOG.md; LICENSE.md; README.md; REFUND.md; SUPPORT.md; artifacts/changelog-CHANGELOG.md; artifacts/checksums-checksums.json; artifacts/data-dictionary-DATA-DICTIONARY.md; artifacts/full-full.csv; artifacts/full-full.jsonl; artifacts/full-full.parquet; artifacts/known-limitations-KNOWN-LIMITATIONS.md; artifacts/license-LICENSE.md; artifacts/manifest-manifest.json; artifacts/provenance-provenance.json; artifacts/quality-report-quality-report.json; artifacts/readme-README.md; artifacts/sample-sample.csv; artifacts/schema-schema.json; artifacts/source-policy-source-policy.json; checksums.json; cover.svg; download-manifest.json; gumroad-product.json; health-check.json; output-contract.json; quality-manifest.json; rollback.json; sample-data.json; smoke-fixture.json
- Formats: CSV; JSON; JSONL; MD; PARQUET; SVG
- Archive size in bytes: 21606
- Row counts by table: all_records: 8
- Row units by table: all_records: synthetic test cases
- Coverage: Immutable, clearly labelled synthetic benchmark cases for deterministic regression and release-gate evaluation.
- Geographic scope: Immutable, clearly labelled synthetic benchmark cases for deterministic regression and release-gate evaluation.
- Publisher: Zentra-authored synthetic benchmark cases
- Publisher/source update: Explicitly unknown; see immutable provenance for the recorded source retrieval.
- Source retrieved/checked for this edition: 2026-07-14T18:22:55+02:00
- Edition published: 2026-07-14T18:22:55+02:00
- Schema version: https://json-schema.org/draft/2020-12/schema
- Licence and attribution: # Marketplace licence Use is governed by the licence and terms shown on the canonical marketplace listing. Source provenance and third-party source rights remain attached to delivered artifacts. No custom or negotiated licence is implied.
- Source basis: Zentra-authored synthetic benchmark cases (synthetic; no external source)

## Schema

- case_id (string): 
- benchmark (string): 
- category (string): 
- title (string): 
- input (string): 
- expected_result (string): 
- severity (string): 
- rationale (string): 
- synthetic (boolean): 

## Public preview

- [Bounded dataset sample](https://zentrafoundry-public-media.fsn1.your-objectstorage.com/media/samples/zf-060-2026-1-dd7cc659f88a.json)

## Purchase and delivery

- Price: EUR 24
- Price and tax basis: Owner-inventory EUR list price migrated to WooCommerce; checkout tax treatment follows the live WooCommerce configuration.
Your purchase includes the edition described on this page. Later releases are separate unless this offer explicitly includes an update entitlement.

## Maintenance

Source checks and new-release publication do not change the historical coverage or automatically add future editions to an earlier purchase.
Scheduled checks reconcile approved publisher editions. A check date does not change the dataset coverage or imply new records. Fixed historical and synthetic editions retain their documented scope.

Purchased archives are delivered through [My Library](https://zentrafoundry.com/my-account/). Public samples do not grant access to the full paid dataset.

Publisher edition index last reconciled: 2026-10-13 08:45:54 UTC. This is not a source-data update date.