Uniqueness

Definition:

(In the context of Data Management) a measurement of the degree that no record or attribute is recorded more than once.

Commentary:

Uniqueness refers to the singularity of records and or attributes. The objective is a single (i.e., unique) recording of data. Uniqueness is one of the seven data quality dimensions.

Examples:
– Two instances of the same security with different identifiers or spellings
– A preferred share represented as both an equity and debt object in the same database