Database - Data Modeling with ER Model

Exercise :: Data Modeling with ER Model - General Questions

11. 

An attribute that names or identifies entity instances is a(n):

A. entity.
B. attribute.
C. identifier.
D. relationship.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

12. 

Properties that describe the characteristics of entities are called:

A. entities.
B. attributes.
C. identifiers.
D. relationships.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

13. 

In which of the following can many entity instances of one type be related to many entity instances of another type?

A. One-to-One Relationship
B. One-to-Many Relationship
C. Many-to-Many Relationship
D. Composite Relationship

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

14. 

Entities of a given type are grouped into a(n):

A. database.
B. entity class.
C. attribute.
D. ERD.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

15. 

Which of the following is NOT a basic element of all versions of the E-R model?

A. Entities
B. Attributes
C. Relationships
D. Primary keys

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.