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. 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)






2. Look-up tables referred to by fact tables






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






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






5. Requesting more information about a particular fact






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






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






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






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






10. The business applications






11. Used to support day-to-day operations






12. Extract - Load and Transform






13. Business applications - methods and tools that support the caputre and use of master data






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






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






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






17. A query created by a BI user






18. Import data into a new database






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






20. Second stage of building a data mart






21. Dimensions which are shared by two or more facts






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






23. Draws data from operational or external systems






24. A schema where dimensions are only connected to facts






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






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






27. Online Analytical Processing






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






29. Requesting information about related facts






30. Data about the data






31. The operational systems - data warehouse and data marts






32. Third stage of building a data mart






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






34. A group of conformed dimensions






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






36. 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






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






38. Fourth stage of building a data mart






39. First stage of building a data mart






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






41. Take data from a source system






42. An alternative term for a data warehouse






43. Draws data from a data warehouse






44. Data accessible to the whole data warehouse






45. These extend BI into automating and optimising processes






46. 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)






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






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






49. A report created by an IT department user






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