Data Warehousing MCQ Quiz - Multiple Choice Questions & Answers Page 2

11. The active data warehouse architecture includes

1. at least one data mart.
2. data that can extracted from numerous internal and external sources.
3. near real-time updates.
4. all of the above.

12. The data administration subsystem helps you perform all of the following, except

1. backups and recovery.
2. query optimization.
3. security management.
4. create, change, and delete information.

13. A data warehouse iswhich of the following?

1. Can be updated by end users.
2. Contains numerous naming conventions and formats.
3. Organized around important subject areas.
4. Contains only current data.

14. The extract process is

1. capturing all of the data contained in various operational systems.
2. capturing a subset of the data contained in various operational systems.
3. capturing all of the data contained in various decision support systems.
4. capturing a subset of the data contained in various decision support systems.

15. ______consists of formal definitions, such as a COBOL layout or a database schema.

1. Classical metadata.
2. Transformation metadata.
3. Historical metadata.
4. Structural metadata.

16. Fact tables are

1. completely demoralized.
2. partially demoralized.
3. completely normalized.
4. partially normalized.

17. ____________ is called a multifield transformation.

1. Converting data from one field into multiple fields.
2. Converting data from fields into field.
3. Converting data from double fields into multiple fields.
4. Converting data from one field to one field.

18. Transient data is

1. data in which changes to existing records cause the previous version of the records to be eliminated.
2. data in which changes to existing records do not cause the previous version of the records to beeliminated.
3. data that are never altered or deleted once they have been added.
4. data that are never deleted once they have been added.

19. __________ is a subject-oriented, integrated, time-variant, nonvolatile collection of data in support of management decisions.

1. Data Mining
2. Data Warehousing
3. Web Mining
4. Text Mining

20. ......................... is a subject-oriented, integrated, time-variant, nonvolatile collection or data in support of management decisios.

1. Data Mining
2. DataWarehousing
3. Document Mining
4. Text Mining