Stage 5: Derive the logical data model
Knobit of Data modelling · K-504 · Skill
Recognises a repeating group in an entity
What it means
Numbered or listed attributes for the same property, or one attribute holding a list. The fourth instance has nowhere to go and every query needs one predicate per copy.
How it is assessed
Flags the deficient case and passes the acceptable one. Deficient: Account with Holder 1 Party Identifier, Holder 2 Party Identifier, Holder 3 Party Identifier Acceptable: Account Holder (Account, Party, holder role, start date) (`LOG-017`)
Builds on
- Explains first normal formK-554 · Knowledge
Needed by
- None