Constraint the platform does not enforce (physical model)
https://knobit.org/id/knobit/K-615
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| Context functions | Result evaluation |
|---|---|
| Knobit creation methods | AI generated, human edited |
| Knobit types | Skill |
| LCG purposes | Assessing the learner's knowledge or skill state |
| LCG purposes | Selecting an assessment task or learning activity |
| action verb | Recognises en |
| assessment criterion | Flags the deficient case and passes the acceptable one. Deficient: `uk_dim_account_nk` on Snowflake and no `uniqueness` DQ rule; a rerun load duplicates every version Acceptable: Constraint kept (emitted `NOT ENFORCED`, still read by optimisers and BI tools), plus a `uniqueness` or `integrity` DQ rule per constraint citing it in `backs`, and an inferred-member row for each dimension so facts never need an orphan key (`DQR-017`, `DQR-018`) en |
| assessment method | skill-tests task: Loan application physical model on Snowflake (physical design anomaly skills) en |
| conforms to profile | https://oppekava.edu.ee/a/Knobitite_kirjeldamise_ja_seostamise_reeglid#LCG-KNOBIT-0.1 |
| dcterms:identifier | K-615 |
| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
| dcterms:source | Review checklist 04-physical, row 15; this skill (08-ddl.md); Fagin 1981 en |
| expected result | A finding that names the defective physical model element and the defect en |
| owl:sameAs | https://bitbucket.org/reffa/ontology/id/knobit/data-modelling/06-physical/15 |
| rdfs:label | Constraint the platform does not enforce (physical model) en |
| schema:creativeWorkStatus | superseded |
| schema:isPartOf | Data modelling (DAMA-DMBOK2) |
| schema:supersededBy | Recognises a declared constraint the target platform does not enforce |
| skos:definition | A primary key, unique or foreign key declared on Snowflake or Databricks, which accept the syntax and check nothing, with no DQ rule doing the checking. The constraint documents the intent and enforces nothing. en |
| skos:prefLabel | Constraint the platform does not enforce (physical model) en |
| target object | physical model en |