Discussion
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- Question
Which of the following indicates the minimum number of entities that must be involved in a relationship?
Options- A. Minimum cardinality
- B. Maximum cardinality
- C. ERD
- D. Greater Entity Count (GEC)
- Correct Answer
- Minimum cardinality
- 1. Entities can be associated with one another in which of the following?
Options- A. Entities
- B. Attributes
- C. Identifiers
- D. Relationships Discuss
- 2. Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?
Options- A. Supertype entity
- B. Subtype entity
- C. Archetype entity
- D. Instance entity Discuss
- 3. Which of the following indicates the maximum number of entities that can be involved in a relationship?
Options- A. Minimum cardinality
- B. Maximum cardinality
- C. ERD
- D. Greater Entity Count (GEC) Discuss
- 4. An attribute that names or identifies entity instances is a(n):
Options- A. entity.
- B. attribute.
- C. identifier.
- D. relationship. Discuss
- 5. Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
Options- A. Weak entity
- B. Strong entity
- C. ID-dependent entity
- D. ID- independent entity Discuss
- 6. Which of the following refers to something that can be identified in the users' work environment, something that the users want to track?
Options- A. Entity
- B. Attribute
- C. Identifier
- D. Relationship Discuss
- 7. In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.
Options- A. parent
- B. child
- C. instance
- D. subtype Discuss
- 8. In which of the following is a single-entity instance of one type of related to a single-entity instance of another type?
Options- A. One-to-One Relationship
- B. One-to-Many Relationship
- C. Many-to-Many Relationship
- D. Composite Relationship Discuss
- 9. Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?
Options- A. Weak entity
- B. Strong entity
- C. ID-dependent entity
- D. ID-independent entity Discuss
- 10. What is not an advantage of stored procedures?
Options- A. Greater security
- B. SQL can be optimized
- C. Code sharing
- D. Increased network traffic Discuss
Data Modeling with ER Model problems
Search Results
Correct Answer: Relationships
Correct Answer: Subtype entity
Correct Answer: Maximum cardinality
Correct Answer: identifier.
Correct Answer: Weak entity
Correct Answer: Entity
Correct Answer: child
Correct Answer: One-to-One Relationship
Correct Answer: ID-dependent entity
Correct Answer: Increased network traffic
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