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






2. A table containing foreign keys and values






3. Fifth stage of building a data mart






4. A group of related fact tables






5. Take data from a source system






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






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






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






9. The operational systems - data warehouse and data marts






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






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






12. 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)






13. Data accessible to the whole data warehouse






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






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






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






17. Import data into a new database






18. A query created by a BI user






19. Look-up tables referred to by fact tables






20. Requesting more information about a particular fact






21. Data about the data






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






23. First stage of building a data mart






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






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






26. Extract - Load and Transform






27. The business applications






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






29. These extend BI into automating and optimising processes






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






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






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






33. A synonym for Business Intelligence






34. Draws data from operational or external systems






35. Online Analytical Processing






36. Used to support day-to-day operations






37. An alternative term for a data warehouse






38. Requesting information about related facts






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






40. Second stage of building a data mart






41. Dimensions which are shared by two or more facts






42. 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






43. Extract - Transform and Load






44. A schema where dimensions are only connected to facts






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






46. Fourth stage of building a data mart






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






48. Draws data from a data warehouse






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






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