For a Binary Many-To-Many Relationship Existing Between Entity Types a and B

question 111

Multiple Choice

For a binary many-to-many relationship existing between entity types A and B:

• A)a separate relation C is created;the primary key of relation C is a composite key consisting of the primary key for each of the two entities in the relationship
• B)the primary keys of relation A and relation B are designated as functionally dependent attributes
• C)secondary keys are used to establish the relationship
• D)place the primary key of either entity in the relation for the other entity or do this for both entities

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Definitions:

Nephrolithiasis

A condition marked by the formation of kidney stones, or renal calculi, within the urinary system.

Kidney Stones

Hard deposits made of minerals and salts that form inside the kidneys, which can cause severe pain and discomfort when passing through the urinary tract.

Condition

A state of health, physical situation, or the stipulations affecting an agreement or circumstance.

Laryngectomy

Surgical removal of the larynx or voice box.