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






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






3. A group of related fact tables






4. 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)






5. A summary record for a specific reporting period






6. First stage of building a data mart






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






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






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






10. Business applications - methods and tools that support the caputre and use of master data






11. Extract - Load and Transform






12. Look-up tables referred to by fact tables






13. Data accessible to the whole data warehouse






14. Dimensions which are shared by two or more facts






15. Take data from a source system






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






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






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






19. A schema where dimensions are only connected to facts






20. Requesting more information about a particular fact






21. Extract - Transform and Load






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






23. Used to support day-to-day operations






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






25. The operational systems - data warehouse and data marts






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






27. An alternative term for a data warehouse






28. A query created by a BI user






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






30. Fifth stage of building a data mart






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






32. 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)






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






34. A table containing foreign keys and values






35. Second stage of building a data mart






36. Draws data from operational or external systems






37. These extend BI into automating and optimising processes






38. Online Analytical Processing






39. Draws data from a data warehouse






40. Import data into a new database






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






42. A report created by an IT department user






43. A synonym for Business Intelligence






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






45. Data about the data






46. A group of conformed dimensions






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






48. Third stage of building a data mart






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






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