Identify the Statement Below That Is False with Regards to Basic

question 29

Multiple Choice

Identify the statement below that is false with regards to basic requirements of a relational database model.

• A)Primary keys can be null.
• B)Foreign keys,if not null,must have values that correspond to the value of a primary key in another table.
• C)All non-key attributes in a table should describe a characteristic about the object identified by the primary key.
• D)Every column in a row must be single-valued.

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Definitions:

Schachter And Singer

Psychologists known for their development of the two-factor theory of emotion, emphasizing the role of cognitive labels in the experience of emotion.

Emotion-Arousing Situation

Any event or circumstance that triggers an emotional response in individuals.

Facial Expression

Movements of the facial muscles that communicate emotions or reactions and are a significant aspect of non-verbal communication.

Emotional Reactions

The spontaneous response of the emotional system to an event, thought, or memory, varying greatly in intensity and type.