Test your basic knowledge |

Data Warehousing

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Online Analytical Processing






2. First stage of the data warehouse data architecture design process






3. Third stage of the data warehouse data architecture design process






4. Dimensions which are shared by two or more facts






5. A table containing foreign keys and values






6. A visual display of the most important information needed by a particular user






7. Requesting information about related facts






8. An alternative term for a data warehouse






9. Draws data from operational or external systems






10. Unlike independent data marts the marts are linked via middleware






11. A daily snapshot for each day of a set period






12. A query created by a BI user






13. Extract - Transform and Load






14. Second stage of the data warehouse data architecture design process






15. Splitting data tables into smaller tables for efficient access.






16. Make changes to data so that it is compatible with a new database






17. Tables containing summary records calculated from the main fact tables






18. A single low-level fact representing a single business operation






19. Second stage of building a data mart






20. First stage of building a data mart






21. Issues to consider when deciding EDW architecture: 1. Which database management system (DBMS) should be used? (ex: Crash Data" MS SQL) 2. Will ______________________ be used? 3. Will data migration tools be used to load the data warehouse?4. What too






22. A simplified form of a data warehouse supporting the work of a single line of business






23. An operational system that provides data for a business information system






24. Requesting more information about a particular fact






25. Draws data from a data warehouse






26. A group of related fact tables






27. A schema where dimensions are only connected to facts






28. Third stage of building a data mart






29. All database architectural fall into one of these two categories: EDW or _________ (independent data marts - data mart bus architecture - hub and spoke architecture - centralized data warehouse - federated data warehouse)






30. Fourth stage of the data warehouse data architecture design process






31. A group of conformed dimensions






32. Look-up tables referred to by fact tables






33. A synonym for Business Intelligence






34. A logical design technique that presents data in a way that is optimised for high-performance access






35. The level of detail required for a fact to be useful






36. Data accessible to the whole data warehouse






37. A computer system used to support the day-to-day operations of an organisation






38. A system that allows people to access and analyse data for business management and performance improvement






39. Fourth stage of building a data mart






40. Fifth stage of building a data mart






41. Data about the data






42. A report created by an IT department user






43. A database table that maps (e.g.) manufacturing product IDs to sales product IDs






44. The business applications






45. Take data from a source system






46. A summary record for a specific reporting period






47. A tool that allows users to write queries without having to learn SQL






48. Allows multiple CPUs to process multiple queries simultaneously - providing scalability.






49. Import data into a new database






50. A schema where dimensions may be connected to facts or to other dimensions