If a 1:M Relationship Is Optional on the 1 Side

question 30

Multiple Choice

If a 1:M relationship is optional on the 1 side and mandatory on the M side,which of the following is true?

• A)The resulting foreign key can have null (empty)values
• B)The resulting foreign key cannot have null (empty)values
• C)The resulting foreign key must have null (empty)values
• D)No foreign key is created as a result of mapping such a relationship

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Definitions:

Phonological Awareness

The ability to recognize and manipulate sounds in words, a critical skill for the development of reading.

Shiritori

A word game from Japan where participants alternate saying words that start with the last kana of the word said before.

Overregularization

A language acquisition error where children apply regular grammatical patterns to words that are exceptions.

Permissive

A parenting or leadership style characterized by low demands with high responsiveness, allowing for a high degree of freedom and self-regulation.