Recognises a non-superkey determinant in a 3NF entity
https://knobit.org/id/knobit/K-511
Also as Turtle · JSON-LD · RDF/XML · AI benchmark on Skilirium
| 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 Boyce-Codd normal form |
| assessment criterion | Flags the deficient case and passes the acceptable one. Deficient: Arrears Assignment (Loan, Product Family, Collections Officer), key (Loan, Product Family); each officer works on one product family, so moving an officer means updating every assignment Acceptable: Collections Officer holds its Product Family; Loan Collections Assignment (Loan, Collections Officer); the constraint lost by the split goes to row 15 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-511 |
| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
| dcterms:source | Review checklist 03-logical, row 11; Codd 1974; S&W 13.3 en |
| expected result | The determinant, what it determines, and the overlapping candidate keys it hides behind 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/11 |
| rdfs:label | Recognises a non-superkey determinant in a 3NF entity en |
| schema:creativeWorkStatus | accepted |
| schema:isPartOf | Data modelling (DAMA-DMBOK2) |
| skos:altLabel | Determinant that is not a key (BCNF) (logical model) en |
| skos:definition | An attribute or set of attributes determines another but is not a candidate key. Usually hides behind overlapping composite keys, so the entity is in 3NF and still has update anomalies. en |
| skos:prefLabel | Recognises a non-superkey determinant in a 3NF entity en |
| target object | determinant that is not a candidate 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 |