[Solved] Which of the following is true of a data model? A) It is created after the database is designed. B) It is an attribute whose value is associated with only one entity instance. C) It is a logical representation of the structure of data. D) It does not describe the relationships among data. Freud's Theory: A set of psychoanalytic theories developed by Sigmund Freud that focus on unconscious motives and conflicts, particularly those originating in childhood. Phallic Stage: The phallic stage is a concept in Freudian psychology referring to the period in early childhood when the libido (sexual energy) is concentrated in the genital area. Erotic Desires: Feelings of wanting or longing for sexual contact or relationships. Compensation: A strategy whereby one makes up for a deficiency in one area by excelling in another area.