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






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






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






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






5. 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)






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






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






8. Draws data from operational or external systems






9. A summary record for a specific reporting period






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. Data accessible to the whole data warehouse






12. Dimensions which are shared by two or more facts






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






14. Third stage of building a data mart






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






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






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






18. Requesting more information about a particular fact






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






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






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






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






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






24. 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






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






26. A query created by a BI user






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






28. Used to support day-to-day operations






29. Second stage of building a data mart






30. Fifth stage of building a data mart






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






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






33. A group of related fact tables






34. Draws data from a data warehouse






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






36. Online Analytical Processing






37. Fourth stage of building a data mart






38. Import data into a new database






39. The business applications






40. A table containing foreign keys and values






41. A group of conformed dimensions






42. A synonym for Business Intelligence






43. Extract - Transform and Load






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






45. Requesting information about related facts






46. Look-up tables referred to by fact tables






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






48. Take data from a source system






49. A report created by an IT department user






50. These extend BI into automating and optimising processes