Stage 5: Derive the logical data model
Knobit of Data modelling · K-506 · Skill
Recognises an attribute with several meanings
What it means
An attribute whose meaning, format or unit depends on another attribute's value, or which merges things the business treats as different.
How it is assessed
Flags the deficient case and passes the acceptable one. Deficient: Party Identifier holding isikukood for persons and registrikood for companies; Instalment Amount meaning the principal portion or the interest portion depending on Portion Type Acceptable: A Party Identifier entity with Identifier Type from a value set, each type with its own format rule; principal portion and interest portion as separate attributes
Builds on
- Explains attribute domainsK-562 · Knowledge
Needed by
- Recognises a sentinel value standing in for nullK-629 · Skill
- Recognises a null with a business meaningK-630 · Skill