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






2. Data about the data






3. Look-up tables referred to by fact tables






4. Extract - Load and Transform






5. A group of conformed dimensions






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






7. 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






8. Online Analytical Processing






9. A schema where dimensions are only connected to facts






10. These extend BI into automating and optimising processes






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






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






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






14. Dimensions which are shared by two or more facts






15. First stage of building a data mart






16. Extract - Transform and Load






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






18. A report created by an IT department user






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






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






21. Fourth stage of building a data mart






22. Take data from a source system






23. Draws data from a data warehouse






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






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






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






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






28. Fifth stage of building a data mart






29. A table containing foreign keys and values






30. The operational systems - data warehouse and data marts






31. Import data into a new database






32. An alternative term for a data warehouse






33. Second stage of building a data mart






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






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






36. The business applications






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






38. A query created by a BI user






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






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






41. Draws data from operational or external systems






42. A summary record for a specific reporting period






43. Requesting information about related facts






44. Requesting more information about a particular fact






45. Data accessible to the whole data warehouse






46. A group of related fact tables






47. Used to support day-to-day operations






48. Third stage of building a data mart






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