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 group of related fact tables






2. Requesting more information about a particular fact






3. Second stage of building a data mart






4. A schema where dimensions are only connected to facts






5. A report created by an IT department user






6. Extract - Load and Transform






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






8. Online Analytical Processing






9. Dimensions which are shared by two or more facts






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






11. 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)






12. A query created by a BI user






13. Take data from a source system






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






15. Third stage of building a data mart






16. A summary record for a specific reporting period






17. Data about the data






18. Fifth stage of building a data mart






19. These extend BI into automating and optimising processes






20. A group of conformed dimensions






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






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






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






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






25. 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






26. Used to support day-to-day operations






27. Data accessible to the whole data warehouse






28. Fourth stage of building a data mart






29. Extract - Transform and Load






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






31. The operational systems - data warehouse and data marts






32. Requesting information about related facts






33. An alternative term for a data warehouse






34. Draws data from operational or external systems






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






36. A table containing foreign keys and values






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






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






39. A synonym for Business Intelligence






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






41. Import data into a new database






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






43. The business applications






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






45. Look-up tables referred to by fact tables






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






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






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






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






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