Recognises a reference to a versioned table by business key alone
https://knobit.org/id/knobit/K-624
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| Context functions | Result evaluation |
|---|---|
| Knobit creation methods | AI generated, AI edited |
| 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 |
| applies knowledge | Explains history strategies and validity-period conventions |
| assessment criterion | Flags the deficient case and passes the acceptable one. Deficient: `fact_payment.account_identifier` joined to `dim_account` on `account_identifier`: one payment becomes three; `customer_segment_code` resolved through today's `ref_customer_segment`, so a 2025 report changes after the segment boundaries are widened Acceptable: The fact references the version key valid at the event date (`account_key`); reference tables carry validity, and the fact stores the code valid at the time 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-624 |
| dcterms:identifier | Q-394 |
| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
| dcterms:source | Review checklist 04-physical, row 24; S&W 15.7, 16.6; DDL 2014 ch. 13 en |
| dcterms:source | Shared-URI copy of data-modelling K-624 (Review checklist 04-physical (data-modelling), row 24; S&W 15.7, 16.6; DDL 2014 ch. 13) en |
| expected result | The reference and the version key it needs en |
| owl:sameAs | https://bitbucket.org/reffa/ontology/id/knobit/data-modelling/06-physical/24 |
| rdfs:label | Recognises a reference to a versioned table by business key alone en |
| schema:creativeWorkStatus | accepted |
| schema:isPartOf | Data modelling (DAMA-DMBOK2) |
| schema:isPartOf | Data quality management (DAMA-DMBOK2) |
| skos:altLabel | Reference to a versioned table by business key alone (physical model) en |
| skos:definition | A foreign key or join to a table with versions that names the business key and not the version, or a code resolved through today's reference data. Each row multiplies by the number of versions, or past rows change meaning when the reference data does. en |
| skos:prefLabel | Recognises a reference to a versioned table by business key alone en |
| target object | join or foreign key to a versioned table en |
Used by
| depends on knobit | Recognises a past event judged against present data |
|---|---|
| includes knobit | Designs a physical data model for the target platform without introducing anomalies |
| includes knobit | Derives data quality rules from the data rules and the physical model |
| requires knobit | Design the physical data model |
| requires knobit | Derive data quality rules |