Recognises a partial dependency on a composite key
https://knobit.org/id/knobit/K-508
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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 |
| applies knowledge | Explains second normal form |
| assessment criterion | Flags the deficient case and passes the acceptable one. Deficient: Instalment keyed by (Loan Identifier, Instalment Number) carries Loan Maturity Date, which depends on Loan Identifier alone Acceptable: Loan Maturity Date on Loan; Instalment holds only facts about the instalment (`LOG-019`) en |
| assessment method | skill-tests task: Loan application logical model (normalisation anomaly skills) en |
| conforms to profile | https://oppekava.edu.ee/a/Knobitite_kirjeldamise_ja_seostamise_reeglid#LCG-KNOBIT-0.1 |
| dcterms:identifier | K-508 |
| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
| dcterms:source | Review checklist 03-logical, row 8; Codd 1971; Kent 1983; S&W 2.7 en |
| expected result | The non-key attribute and the part of the key it depends on en |
| followed by | Decomposes an entity along a functional dependency without loss |
| owl:sameAs | https://bitbucket.org/reffa/ontology/id/knobit/data-modelling/05-logical/08 |
| rdfs:label | Recognises a partial dependency on a composite key en |
| schema:creativeWorkStatus | accepted |
| schema:isPartOf | Data modelling (DAMA-DMBOK2) |
| skos:altLabel | Partial dependency (2NF) (logical model) en |
| skos:definition | In an entity with a composite key, a non-key attribute depends on only part of the key. en |
| skos:prefLabel | Recognises a partial dependency on a composite key en |
| target object | partial dependency on a composite key en |
Used by
| followed by | Records the functional dependencies of an entity |
|---|---|
| includes knobit | Derives a normalised logical data model and traces anomalies to their causes |
| requires knobit | Derive the logical data model |