5. etapp: Loogilise andmemudeli tuletamine
Kompetentsi Andmete modelleerimine knobit · K-555 · Teadmine
Explains second normal form
Mida see tähendab
No non-prime attribute depends on part of a candidate key.
Kuidas seda hinnatakse
Classifies sample entities with composite keys as in or not in 2NF and names the partial dependency
Tugineb
- Explains candidate key and prime attributeK-552 · Teadmine
Vajalik
- Recognises a partial dependency on a composite keyK-508 · Oskus