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. Splitting data tables into smaller tables for efficient access.






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






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






4. Third stage of building a data mart






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






6. An alternative term for a data warehouse






7. Data accessible to the whole data warehouse






8. A group of related fact tables






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






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






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






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






13. The operational systems - data warehouse and data marts






14. Online Analytical Processing






15. Look-up tables referred to by fact tables






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






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






18. Extract - Load and Transform






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






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






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






22. Draws data from a data warehouse






23. Requesting more information about a particular fact






24. A group of conformed dimensions






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






26. A table containing foreign keys and values






27. Extract - Transform and Load






28. Dimensions which are shared by two or more facts






29. Import data into a new database






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






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






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. A synonym for Business Intelligence






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






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






36. Requesting information about related facts






37. Draws data from operational or external systems






38. The business applications






39. Data about the data






40. A report created by an IT department user






41. A query created by a BI user






42. Fifth stage of building a data mart






43. Second stage of building a data mart






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






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






46. Used to support day-to-day operations






47. Take data from a source system






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






49. A summary record for a specific reporting period






50. 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)