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Which Type of Constraint Ensures the Quality of Information in a Relational

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Which type of constraint ensures the quality of information in a relational database?


Definitions:

Decade

A decade, defined as a span of ten years.

Average Age

A statistical measure that sums the ages of all individuals in a group and divides by the number of individuals to define the central age for that population.

Marriage

A legally and socially sanctioned union between individuals that establishes rights and obligations between them.

CARDIA Study

The Coronary Artery Risk Development in Young Adults Study, a research project investigating the development and determinants of cardiovascular disease.

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