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






2. Import data into a new database






3. Data accessible to the whole data warehouse






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






5. A summary record for a specific reporting period






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






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






8. Fifth stage of building a data mart






9. Online Analytical Processing






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






11. The business applications






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






13. Dimensions which are shared by two or more facts






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






15. simplest and least costly architecture developed to operate independently of each other - poor solution






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






17. Second stage of building a data mart






18. Look-up tables referred to by fact tables






19. Requesting information about related facts






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






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






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






23. Draws data from operational or external systems






24. A group of conformed dimensions






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






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






27. A report created by an IT department user






28. Extract - Transform and Load






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






30. These extend BI into automating and optimising processes






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






32. Used to support day-to-day operations






33. Fourth stage of building a data mart






34. A synonym for Business Intelligence






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






36. A schema where dimensions are only connected to facts






37. Take data from a source system






38. Most famous data warehouse where a maintable infastructure includes a centralized data warehouse that serves for the needs of all organizational units (most favored 39 percent)






39. The operational systems - data warehouse and data marts






40. A table containing foreign keys and values






41. 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)






42. Draws data from a data warehouse






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






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






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






46. A query created by a BI user






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






48. Requesting more information about a particular fact






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






50. An alternative term for a data warehouse