1z0-071 Exam Dumps | Which three items does a direction of a relationship contain?

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Question 52/139

Which three items does a direction of a relationship contain?

A. an attribute

B. a cardinality

C. label

D. an optionality

E. a unique identifier

F. an entity

Correct Answer: B,C,D

In data modeling and database design, the direction of a relationship typically includes:
* Option B: a cardinality
* Cardinality refers to the numerical relationships between two entities, indicating the number of instances of one entity that can or must be associated with each instance of another.
* Option C: label
* A label is often used to describe the role or purpose of the relationship in a way that clarifies the nature of the interaction between entities.
* Option D: an optionality
* Optionality indicates whether or not a relationship is mandatory or optional; in other words, it shows if an instance of an entity must be related to an instance of another entity or if it can exist without such a relationship.
Options A, E, and F are not part of the direction of a relationship:
* Option A: An attribute is a property or characteristic of an entity, not the direction of a relationship.
* Option E: A unique identifier uniquely identifies each instance of an entity, not a relationship's direction.
* Option F: An entity is a thing with distinct and independent existence in a database, usually mapped to a table, not a part of the direction of a relationship.

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