@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/dm-physical-postgres/I12> a edu:Question ;
    rdfs:label "I12 (1 points)"@en ;
    dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
    owl:sameAs <https://bitbucket.org/reffa/ontology/id/task/dm-physical-postgres/I12> ;
    schema:hasPart <https://knobit.org/id/register/data-modelling#I-629> ;
    schema:identifier "I12" ;
    schema:position 16 ;
    schema:text "Nullable foreign key on a reporting join path: payment.channel_id is null for payments generated by standing orders (BR-314), and v_payment_volume_by_channel inner-joins payment_channel, so those payments drop out of the bank's daily volume. Fixed by an outer join with a label for payments with no channel, the nullability kept because BR-314 makes it true; a documented not-applicable channel row with the column made not null also passes."@en .

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

<https://knobit.org/id/register/data-modelling#I-629> rdfs:label "dm-physical-postgres I12: nullable channel on the payment volume join"@en .