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






2. These extend BI into automating and optimising processes






3. A synonym for Business Intelligence






4. Used to support day-to-day operations






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






6. Import data into a new database






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






8. Extract - Load and Transform






9. 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)






10. Draws data from a data warehouse






11. First stage of building a data mart






12. Second stage of building a data mart






13. Requesting information about related facts






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






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






16. Online Analytical Processing






17. Third stage of building a data mart






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






19. Dimensions which are shared by two or more facts






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






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






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






23. Data about the data






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






25. A report created by an IT department user






26. Requesting more information about a particular fact






27. Take data from a source system






28. A summary record for a specific reporting period






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






30. Draws data from operational or external systems






31. A schema where dimensions are only connected to facts






32. A group of conformed dimensions






33. A table containing foreign keys and values






34. The operational systems - data warehouse and data marts






35. An alternative term for a data warehouse






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






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






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






39. Look-up tables referred to by fact tables






40. Extract - Transform and Load






41. 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)






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






43. 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






44. Data accessible to the whole data warehouse






45. Fourth stage of building a data mart






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






47. Fifth stage of building a data mart






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






49. A query created by a BI user






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