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Exam Data-Management-Foundations Topic 1 Question 49 Discussion

Actual exam question for WGU's Data-Management-Foundations exam
Question #: 49
Topic #: 1
Which object relates an entity to itself in an entity-relationship model?

Suggested Answer: C Vote an answer

Areflexive relationship(also called aunary relationship) occurs when anentity is related to itself.
Example Usage:
A screenshot of a computer AI-generated content may be incorrect.

CREATE TABLE Employees (
EmpID INT PRIMARY KEY,
Name VARCHAR(50),
ManagerID INT,
FOREIGN KEY (ManagerID) REFERENCES Employees(EmpID)
);
* ManagerIDrefers to another employeewithin the same table.
Why Other Options Are Incorrect:
* Option A (Repository) (Incorrect):A data storage structure, not a relationship type.
* Option B (Relationship instance) (Incorrect):Describesa specific connection between entities, not a reflexive relationship.
* Option D (Attribute) (Incorrect):Attributes storecharacteristics, butdo not define relationships.
Thus, the correct answer isReflexive relationship, as it relates an entity to itself.

by Bart at Jul 11, 2025, 05:54 AM

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