@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix edu: <https://knobit.org/def/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <https://schema.org/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://knobit.org/id/task/dq-rules/C3> a edu:Question ;
    rdfs:label "C3 (2 points)"@en ;
    dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
    owl:sameAs <https://bitbucket.org/reffa/ontology/id/task/dq-rules/C3> ;
    schema:hasPart <https://knobit.org/id/register/data-quality#QI-311>,
        <https://knobit.org/id/register/data-quality#QI-312> ;
    schema:identifier "C3" ;
    schema:position 3 ;
    schema:text "1 each: (a) DQ-008 was copied from a check constraint, so on a nullable column every row with no employment type evaluates to UNKNOWN and fails - the null case is decided explicitly, with a separate completeness check if null is not allowed; (b) DQ-009 judges a historic application's currency against today's reference table, so rows that were valid when recorded start failing - it reads the reference data as at the application date instead."@en .

edu:Question rdfs:label "Question"@en,
        "Küsimus"@et .

<https://knobit.org/id/register/data-quality#QI-311> rdfs:label "dq-rules C3a: nulls left to chance"@en .

<https://knobit.org/id/register/data-quality#QI-312> rdfs:label "dq-rules C3b: history judged against current reference data"@en .