Stage 5: Derive the logical data model
Knobit of Data modelling · K-535 · Skill
Replaces a repeating group with a dependent entity
What it means
Moves numbered or listed attributes into an entity of their own, so any number of occurrences can be recorded.
How it is assessed
Every repeated property moves to the new entity, which has its own identifier and no fixed upper limit
Builds on
- Explains first normal formK-554 · Knowledge
- Explains identifying and non-identifying relationshipsK-904 · Knowledge
Needed by
- None