Order amount must be at least zero and tax rate must be between zero and one.
Keep outliers out of aggregates and monitor their frequency.
Which quality approach is most appropriate?
Define range and validity rules, quarantine violations, and feed the violation rate back to the source owner.
Detailed explanation
Business lower and upper bounds become measurable checks before publication.
Business lower and upper bounds become measurable checks before publication.
Unjustified correction changes meaning and hides input errors.
Unjustified correction changes meaning and hides input errors.
Deletion removes evidence and makes replay difficult.
Deletion removes evidence and makes replay difficult.
Performance metrics do not detect invalid values.
Performance metrics do not detect invalid values.
Check official documentation
Compare the following points with the official documentation.
AWS Glue Data Quality range、completeness、custom SQL rulesの公式説明を確認する。
What to confirm
異常値の検出と無根拠な補正・削除の違いを説明できる。
Key points
- Validity
- Range rule
- Violation rate
- Quarantine
Notes
- Environment: AWS公式DEA-C01試験ガイドと各サービスの公式ドキュメントの確認
- Confirm current AWS service behavior in the official DEA-C01 documentation.
Foundation review
Business semantics
Units, currency, and contract conditions determine the correct bounds.
Trend
An increasing violation rate can reveal an upstream code or sensor change.