@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix edu: <https://knobit.org/def/> .
@prefix knobit: <https://knobit.org/id/knobit/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix register: <https://knobit.org/id/register/> .
@prefix schema: <https://schema.org/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

knobit:K-518 a edu:Knobit ;
    rdfs:label "Recognises an entity identified only by a system-assigned key"@en ;
    dcterms:identifier "K-518" ;
    dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
    dcterms:source "Review checklist 03-logical, row 18; Karwin, ID Required; S&W ch. 6"@en ;
    skos:altLabel "System-assigned key only (logical model)"@en ;
    skos:definition "The entity's only identifier is a number the system assigns, and nothing the business uses to tell instances apart is recorded as `natural_key`. Nothing then stops the same thing being recorded twice. A surrogate key is a physical decision in this skill. A specific form of row 17."@en ;
    skos:prefLabel "Recognises an entity identified only by a system-assigned key"@en ;
    edu:actionVerb "Recognises"@en ;
    edu:appliesKnowledge knobit:K-568,
        knobit:K12-69062 ;
    edu:assessmentCriterion "Flags the deficient case and passes the acceptable one. Deficient: Party with `primary_key: [Party Id]` and no `natural_key`; the same company registered twice under two ids Acceptable: `primary_key` and `natural_key` on the business identifier (registry code, personal identification code); where none exists, say so and record the duplicate-matching rule as a data rule with an enforcement"@en ;
    edu:assessmentMethod "skill-tests task: Loan application logical model (normalisation anomaly skills)"@en ;
    edu:contextFunction <https://knobit.org/def/contextFunction/resultEvaluation> ;
    edu:creationMethod <https://knobit.org/def/creationMethod/aiGeneratedHumanEdited> ;
    edu:expectedResult "The entity and the business identifier it lacks as a natural key"@en ;
    edu:graphRelevance <https://knobit.org/def/graphRelevance/learnerState>,
        <https://knobit.org/def/graphRelevance/taskSelection> ;
    edu:knobitType <https://knobit.org/def/knobitType/skill> ;
    edu:targetObject "entity with only a system-assigned key"@en ;
    schema:creativeWorkStatus "accepted" ;
    schema:isPartOf register:data-modelling .

edu:Knobit rdfs:label "Knobit"@en,
        "Knobit"@et .

knobit:K-568 rdfs:label "Explains natural keys, surrogate keys and key stability"@en .

knobit:K12-69062 rdfs:label "Explains how database tables and relationships are structured"@en,
        "Selgitab andmebaasi tabelite ja seoste ülesehitust"@et .