Stage 5: Derive the logical data model
Knobit of Data modelling · K-562 · Knowledge
Explains attribute domains
What it means
An attribute has one meaning, one type and one set of allowed values.
How it is assessed
Names the domain of each attribute of a sample entity and finds the attribute whose meaning varies
Builds on
- None
Needed by
- Recognises an attribute holding several factsK-505 · Skill
- Recognises an attribute with several meaningsK-506 · Skill
- Recognises attributes held as name-value rowsK-507 · Skill
- Recognises a polymorphic associationK-522 · Skill
- Recognises a physical domain differing from the logical domainK-617 · Skill
- Recognises a length taken from sample dataK-817 · Skill
- Explains domain-key normal formK-561 · Knowledge