All Primary Key Entries Are Unique,and No Part of a Primary

question 93

Multiple Choice

All primary key entries are unique,and no part of a primary key may be ____.

• A) zero
• B) a foreign key
• C) null
• D) a candidate key

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Definitions:

Computer-Mediated Communication

The exchange of messages between individuals through digital devices, allowing for interaction without being physically present.

Channel Etiquette

The set of behavioral norms and expectations governing communication channels, ensuring respectful and effective exchange of information.

Self-Promotion

The act of highlighting one's own abilities and successes to advance one's career or social standing, often in a strategic manner.

Technical Language

Specialized vocabulary used in specific professions or fields of study that may not be easily understood by outsiders.