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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. A table containing foreign keys and values






2. Requesting more information about a particular fact






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






4. An alternative term for a data warehouse






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






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






7. 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)






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






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






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






11. These extend BI into automating and optimising processes






12. Second stage of building a data mart






13. Take data from a source system






14. Data about the data






15. A group of related fact tables






16. Look-up tables referred to by fact tables






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






18. Fifth stage of building a data mart






19. A schema where dimensions are only connected to facts






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






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






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






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






24. Fourth stage of building a data mart






25. The operational systems - data warehouse and data marts






26. Used to support day-to-day operations






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






28. 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






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






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






31. Draws data from operational or external systems






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






33. 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)






34. Data accessible to the whole data warehouse






35. Draws data from a data warehouse






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






37. Extract - Load and Transform






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






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






40. A report created by an IT department user






41. Dimensions which are shared by two or more facts






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






43. First stage of building a data mart






44. The business applications






45. A synonym for Business Intelligence






46. Third stage of building a data mart






47. A query created by a BI user






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






49. A summary record for a specific reporting period






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






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