Discussion
Home ‣ Database ‣ ER Model and Business Rules Comments
- Question
An ERD that has had the entities clustered will display more entities.
Options- A. True
- B. False
- Correct Answer
- False
- 1. Action assertions have traditionally been implemented within an application program.
Options- A. True
- B. False Discuss
- 2. It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.
Options- A. True
- B. False Discuss
- 3. Packaged data models are meant to be exactly right straight out of the box.
Options- A. True
- B. False Discuss
- 4. A supertype can only have only one subtype.
Options- A. True
- B. False Discuss
- 5. A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).
Options- A. True
- B. False Discuss
- 6. An action assertion is a statement that expresses some aspect of the static structure of the organization.
Options- A. True
- B. False Discuss
- 7. An entity instance of a subtype represents the same entity instance of a supertype.
Options- A. True
- B. False Discuss
- 8. Generalization is the process of defining more general entity types from a set of more specialized entity types.
Options- A. True
- B. False Discuss
- 9. An entity cluster is a set of one or more entity types and associated relationships.
Options- A. True
- B. False Discuss
- 10. In general, larger block sizes are used for online transaction processing applications and smaller block sizes are used for databases with a decision support or data warehousing system.
Options- A. True
- B. False Discuss
ER Model and Business Rules problems
Search Results
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: False
Comments
There are no comments.More in Database:
Programming
Copyright ©CuriousTab. All rights reserved.