Discussion
Home ‣ Database ‣ Data Modeling with ER Model Comments
- Question
An identifier typically uses more than one attribute.
Options- A. True
- B. False
- Correct Answer
- False
- 1. An entity is something that can be identified in the user's work environment; something that the users want to track.
Options- A. True
- B. False Discuss
- 2. In a 1:N relationship, the parent is the entity on the one side of the relationship and the child is the entity on the N side of the relationship.
Options- A. True
- B. False Discuss
- 3. A ternary relationship is so called because in contains two entities and one association between them.
Options- A. True
- B. False Discuss
- 4. When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships.
Options- A. True
- B. False Discuss
- 5. An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.
Options- A. True
- B. False Discuss
- 6. Relationship classes are associations between entity classes.
Options- A. True
- B. False Discuss
- 7. Entity instances are associated by relationship classes.
Options- A. True
- B. False Discuss
- 8. Composite identifiers consist of two or more attributes.
Options- A. True
- B. False Discuss
- 9. All instances of an entity class have the same attributes.
Options- A. True
- B. False Discuss
- 10. A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.
Options- A. True
- B. False Discuss
Data Modeling with ER Model problems
Search Results
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
Comments
There are no comments.More in Database:
Programming
Copyright ©CuriousTab. All rights reserved.