Discussion
Home ‣ Database ‣ Data Models into Database Designs Comments
- Question
An ideal primary key is short, numeric and seldom changing.
Options- A. True
- B. False
- Correct Answer
- True
- 1. When the parent entity is required and the parent has a surrogate key, update actions can be ignored.
Options- A. True
- B. False Discuss
- 2. When transforming an entity-relationship model into a relational database design, each entity is represented as a table.
Options- A. True
- B. False Discuss
- 3. When the parent entity is required, a new child row can always be inserted.
Options- A. True
- B. False Discuss
- 4. Surrogate keys have much meaning for users.
Options- A. True
- B. False Discuss
- 5. Cascading updates refers to child rows being automatically deleted when a parent row is deleted.
Options- A. True
- B. False Discuss
- 6. Intersection tables are ID-dependent on both their parent tables.
Options- A. True
- B. False Discuss
- 7. The terms alternate key and candidate key mean the same thing.
Options- A. True
- B. False Discuss
- 8. When the child entity is required, we are restricted from creating a new parent row without also creating a corresponding child row at the same time.
Options- A. True
- B. False Discuss
- 9. (STREET ADDRESS, CITY, STATE, ZIP) is an ideal primary key.
Options- A. True
- B. False Discuss
- 10. The data model produced from the reverse engineering process does not include intersection table data.
Options- A. True
- B. False Discuss
Data Models into Database Designs problems
Search Results
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: False
Comments
There are no comments.More in Database:
Programming
Copyright ©CuriousTab. All rights reserved.