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. Extract - Load and Transform






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






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






4. A table containing foreign keys and values






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






6. Online Analytical Processing






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






8. Second stage of building a data mart






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






10. Data about the data






11. Draws data from operational or external systems






12. The operational systems - data warehouse and data marts






13. The business applications






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






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






16. Take data from a source system






17. Import data into a new database






18. Dimensions which are shared by two or more facts






19. Requesting more information about a particular fact






20. A synonym for Business Intelligence






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






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






24. 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)






25. Draws data from a data warehouse






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






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






28. 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)






29. A query created by a BI user






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






31. Look-up tables referred to by fact tables






32. Data accessible to the whole data warehouse






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






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






35. A summary record for a specific reporting period






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






37. Used to support day-to-day operations






38. Third stage of building a data mart






39. A schema where dimensions are only connected to facts






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






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






42. Fifth stage of building a data mart






43. An alternative term for a data warehouse






44. Fourth stage of building a data mart






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






46. First stage of building a data mart






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






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






49. A group of conformed dimensions






50. A group of related fact tables