The Following Scenario Applies to the Next Several Questions

question 39

Multiple Choice

The following scenario applies to the next several questions:
Consider relations A and B. Relation A represents the entity on the "one side" of a one-to-many relationship; Relation B represents the entity on the "many side" of the one-to-many relationship.
-The delete rule between relations A and B is restrict. If an attempt is made to delete a record in relation A and its primary key value appears as a foreign key value in one or more records of relation B ____.

• A) the record in relation A will be the only record deleted and no other changes will occur
• B) the record in relation A will be the only record deleted and the foreign key values in relation B that match the primary key value of the record in relation A will be updated to null
• C) the record in relation A and all of the records in relation B with foreign key values that match the primary key value of the record in relation A will be deleted
• D) only the records in relation B with foreign key values that match the primary key value of the record in relation A will be deleted
• E) no records will be deleted

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Definitions:

Competence

An individual's capability to effectively perform or execute a particular task.

Relatedness

The need to interact, be connected to, and experience caring for others, considered a fundamental psychological need.

Homeostasis

The tendency of a biological system to maintain stable internal conditions despite external changes.

Drive-reduction Approach

A theory in psychology that posits motivation arises from the need to reduce drives from physiological states of tension, such as hunger or thirst.