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. Requesting more information about a particular fact






2. The operational systems - data warehouse and data marts






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






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






5. Data about the data






6. Online Analytical Processing






7. 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)






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






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






10. Data accessible to the whole data warehouse






11. Look-up tables referred to by fact tables






12. Dimensions which are shared by two or more facts






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






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






15. The business applications






16. Third stage of building a data mart






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






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






19. Import data into a new database






20. A report created by an IT department user






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. Requesting information about related facts






23. An alternative term for a data warehouse






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






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






26. Draws data from operational or external systems






27. Draws data from a data warehouse






28. A group of conformed dimensions






29. Fourth stage of building a data mart






30. These extend BI into automating and optimising processes






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






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






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






34. Fifth stage of building a data mart






35. A summary record for a specific reporting period






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






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






38. Extract - Load and Transform






39. A query created by a BI user






40. A synonym for Business Intelligence






41. 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)






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






43. A table containing foreign keys and values






44. Used to support day-to-day operations






45. A schema where dimensions are only connected to facts






46. Second stage of building a data mart






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






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






49. First stage of building a data mart






50. Extract - Transform and Load