Discussion
Home ‣ Database ‣ Distributed Databases Comments
- Question
Synchronization for pull replication is less disruptive and occurs only when needed by each site, not when a central master site thinks it is best to update.
Options- A. True
- B. False
- Correct Answer
- True
- 1. Periodic data are data that are physically altered once added to the store.
Options- A. True
- B. False Discuss
- 2. Static extract is used for ongoing warehouse maintenance.
Options- A. True
- B. False Discuss
- 3. Independent data marts are often created because an organization focuses on a series of short-term business objectives.
Options- A. True
- B. False Discuss
- 4. Data scrubbing can help upgrade data quality; it is not a long-term solution to the data quality problem.
Options- A. True
- B. False Discuss
- 5. Most operational systems are based on the use of transient data.
Options- A. True
- B. False Discuss
- 6. Databases that are stored on computers at multiple locations and are not interconnected by a network are known as distributed databases.
Options- A. True
- B. False Discuss
- 7. A distributed unit of work allows various statements within a unit of work to refer to multiple remote DBMS locations.
Options- A. True
- B. False Discuss
- 8. The purpose of timestamping is to avoid the use of locks.
Options- A. True
- B. False Discuss
- 9. The problem of concurrency control is more complex in a distributed database.
Options- A. True
- B. False Discuss
- 10. An increasingly popular option for data distribution as well as for fault tolerance of any database is to store a separate copy of the database at each of two or more sites.
Options- A. True
- B. False Discuss
Distributed Databases problems
Search Results
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: True
Comments
There are no comments.More in Database:
Programming
Copyright ©CuriousTab. All rights reserved.