In Unified Modeling Language (UML)primary Keys Cannot by NULL

question 4

True/False

In Unified Modeling Language (UML)primary keys cannot by NULL.

---

Definitions:

Thematic Apperception Test

A projective psychological test involving a series of ambiguous images presented to an individual, who then tells a story based on each image, revealing underlying motives, feelings, and themes.

Rorschach Test

A psychological test in which subjects' perceptions of inkblots are recorded and then analyzed using psychological interpretation, complex algorithms, or both.

Minnesota Multiphasic Personality Inventory

A comprehensive psychometric test used for assessing personality traits and psychopathology, widely used in clinical settings.

Significant Possibility

A scenario or outcome that, although not certain, has a considerable chance of occurring and is of notable importance or relevance.