A(n)________ Is a Primary Key That Is Unique Across All

question 25

Short Answer

A(n)________ is a primary key that is unique across all relations.

---

Definitions:

Nominal Data

Data classified into categories that cannot be ordered or ranked in any meaningful way.

Ordinal Data

A type of categorical statistical data representing order or rank, such as levels of satisfaction, without specifying the exact differences between ranks.

Null Hypothesis

A hypothesis that proposes there is no significant difference or effect and serves as the default assumption to be tested against an alternative.

Student-t

A distribution used in statistics that is appropriate for estimating population parameters for small sample sizes or unknown variances.