A ____ Contains at Least All of the Attribute Names

question 42

Multiple Choice

A ____ contains at least all of the attribute names and characteristics for each table in the system.

• A) data dictionary
• B) relational schema
• C) logical schema
• D) join

---

Definitions:

Forced Expiration

The active process of exhaling air out of the lungs using the abdominal and other respiratory muscles, beyond normal passive breathing.

Unbiased Estimator

A statistical estimator that is expected to produce values close to the parameter it estimates without systematic error.

Expected Value

The long-run average value of repetitions of the same experiment or random trial.

Sample Statistic

A measure derived from a sample portion of a population, typically used to estimate the characteristics of the entire population.