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. Requesting more information about a particular fact






2. Extract - Transform and Load






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






4. Draws data from operational or external systems






5. Dimensions which are shared by two or more facts






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






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






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






9. Fifth stage of building a data mart






10. Data about the data






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






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






13. Online Analytical Processing






14. A schema where dimensions are only connected to facts






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






16. Third stage of building a data mart






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






18. First stage of building a data mart






19. A table containing foreign keys and values






20. An alternative term for a data warehouse






21. Data accessible to the whole data warehouse






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






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






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






25. 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






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






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






28. Look-up tables referred to by fact tables






29. Second stage of building a data mart






30. Used to support day-to-day operations






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






32. Extract - Load and Transform






33. A summary record for a specific reporting period






34. The business applications






35. A group of related fact tables






36. A report created by an IT department user






37. A group of conformed dimensions






38. 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)






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






40. A query created by a BI user






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






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






43. The operational systems - data warehouse and data marts






44. 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)






45. Fourth stage of building a data mart






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






47. Requesting information about related facts






48. These extend BI into automating and optimising processes






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






50. Import data into a new database