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. Tables containing summary records calculated from the main fact tables






2. Data about the data






3. Draws data from operational or external systems






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






5. Second stage of building a data mart






6. Take data from a source system






7. A schema where dimensions are only connected to facts






8. Extract - Load and Transform






9. Used to support day-to-day operations






10. First stage of building a data mart






11. A summary record for a specific reporting period






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






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






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






15. A group of conformed dimensions






16. A table containing foreign keys and values






17. Requesting more information about a particular fact






18. Online Analytical Processing






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






20. Data accessible to the whole data warehouse






21. Look-up tables referred to by fact tables






22. An alternative term for a data warehouse






23. Import data into a new database






24. A report created by an IT department user






25. The operational systems - data warehouse and data marts






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






27. 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)






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






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






30. Third stage of building a data mart






31. Fifth stage of building a data mart






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






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






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






35. The business applications






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






37. Fourth stage of building a data mart






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






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






40. A query created by a BI user






41. Dimensions which are shared by two or more facts






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






43. Extract - Transform and Load






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






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






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






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






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






49. 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)






50. Requesting information about related facts