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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. Data accessible to the whole data warehouse






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






3. Extract - Transform and Load






4. Requesting more information about a particular fact






5. Dimensions which are shared by two or more facts






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






7. Extract - Load and Transform






8. Requesting information about related facts






9. These extend BI into automating and optimising processes






10. 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)






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






12. Import data into a new database






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






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






15. Data about the data






16. A report created by an IT department user






17. A synonym for Business Intelligence






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






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






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






21. Fourth stage of building a data mart






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






23. Take data from a source system






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






25. Second stage of building a data mart






26. Fifth stage of building a data mart






27. An alternative term for a data warehouse






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






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






30. Draws data from a data warehouse






31. A summary record for a specific reporting period






32. Look-up tables referred to by fact tables






33. A table containing foreign keys and values






34. Online Analytical Processing






35. A group of conformed dimensions






36. A group of related fact tables






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






38. Draws data from operational or external systems






39. First stage of building a data mart






40. Third stage of building a data mart






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






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






43. The business applications






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






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






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






47. A query created by a BI user






48. Used to support day-to-day operations






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






50. 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






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