For a Unary M:N Relationship

question 16

Multiple Choice

For a unary M:N relationship:

• A)the entity type is modeled as one relation;using as its primary key a composite key,a separate relation is created to represent the M:N relationship
• B)the entity type and the M:N relationship are modeled as one relation;a composite key is used
• C)separate relations for the class and for each subclass are created;primary and foreign keys are established for each class
• D)the primary key of the entity on the one side of the relationship serves as a foreign key in the relation on the many side of the relationship

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Definitions:

Freud

Sigmund Freud was an Austrian neurologist and the founder of psychoanalysis, a clinical method for treating psychopathology.

Personality Part

An aspect or component of an individual's personality, such as a trait or behavior pattern, that contributes to their overall character and psychological identity.

Reality Principle

A psychoanalytic concept suggesting that ego makes decisions based on the reality of the world, taking into account societal norms and laws.

Gratification Delay

The ability to resist the temptation for an immediate reward and wait for a later reward.