Stage 3: Document data rules as SBVR fact types and rule statements
Knobit of Data modelling · K-306 · Skill
Recognises circular derivation rules
What it means
Derivation rules whose inputs depend, through other derivations, on their own output. Each rule reads sensibly on its own.
How it is assessed
Flags the deficient case and passes the acceptable one. Deficient: `available balance = ledger balance − holds`; `ledger balance = available balance + holds` Acceptable: One derivation with a stored base: `available balance = ledger balance − holds`, with the ledger balance and the holds both captured (`ANO-004`)
Builds on
- Explains derivation rules and their dependenciesK-354 · Knowledge
Needed by
- None