Recognises a uniqueness rule with no unique key behind it

What it means

A uniqueness rule marked as enforced, with no primary key or unique constraint covering those columns.

How it is assessed

Flags the deficient case and passes the acceptable one. Deficient: `BR-2: no two accounts share an IBAN`, `enforcement: constraint`, and no `uk_` on that column Acceptable: A unique constraint on the natural key, or the rule reassigned to a DQ check with a threshold (`ANO-012`)

Builds on

Explains rule enforcement mechanisms and platform enforcementK-356 · Knowledge
Explains candidate key and prime attributeK-552 · Knowledge

Needed by

None