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. First stage of building a data mart






2. Fourth stage of building a data mart






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






4. Used to support day-to-day operations






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






6. Data accessible to the whole data warehouse






7. Draws data from operational or external systems






8. Take data from a source system






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






10. A group of related fact tables






11. Draws data from a data warehouse






12. Requesting more information about a particular fact






13. Extract - Transform and Load






14. The operational systems - data warehouse and data marts






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






16. 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






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






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






19. Extract - Load and Transform






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






21. Requesting information about related facts






22. An alternative term for a data warehouse






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






24. A schema where dimensions are only connected to facts






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






26. Data about the data






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






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






29. Import data into a new database






30. Fifth stage of building a data mart






31. Online Analytical Processing






32. Dimensions which are shared by two or more facts






33. These extend BI into automating and optimising processes






34. A table containing foreign keys and values






35. 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)






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






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






38. Look-up tables referred to by fact tables






39. A group of conformed dimensions






40. A synonym for Business Intelligence






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






42. 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)






43. The business applications






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






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






46. Second stage of building a data mart






47. A report created by an IT department user






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






49. Third stage of building a data mart






50. A summary record for a specific reporting period