C6 (1 points)
https://knobit.org/id/task/dm-logical-integrity/C6
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| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
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| owl:sameAs | https://bitbucket.org/reffa/ontology/id/task/dm-logical-integrity/C6 |
| rdfs:label | C6 (1 points) en |
| schema:hasPart | dm-logical-integrity C6: fan trap between card and card transaction |
| schema:identifier | C6 |
| schema:position | 6 |
| schema:text | Fan trap: Card Account fans out to Card and to Card Transaction, so RP-03 cannot tell which card made a transaction (BR-121). Reported, and fixed by relating Card Transaction to Card (Card 1:N Card Transaction), so the path carries the fact. Keeping Card Account Number on Card Transaction beside the new Card Number is acceptable only if it is marked as derived through the card. en |
Used by
| has question | Retail banking servicing logical model (higher normal forms, decomposition and path anomaly skills) |
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| schema:isPartOf | dm-logical-integrity C6: fan trap between card and card transaction |