Stage 5: Derive the logical data model
Knobit of Data modelling · K-554 · Knowledge
Explains first normal form
What it means
Every attribute holds one atomic value and no property repeats.
How it is assessed
Classifies sample entities as in or not in 1NF and names the violation
Builds on
- None
Needed by
- Recognises a repeating group in an entityK-504 · Skill
- Recognises an attribute holding several factsK-505 · Skill
- Replaces a repeating group with a dependent entityK-535 · Skill