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. Extract - Transform and Load






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






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






4. A group of conformed dimensions






5. The operational systems - data warehouse and data marts






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






7. A synonym for Business Intelligence






8. Dimensions which are shared by two or more facts






9. 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)






10. Used to support day-to-day operations






11. These extend BI into automating and optimising processes






12. Requesting information about related facts






13. A table containing foreign keys and values






14. Data accessible to the whole data warehouse






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






16. A schema where dimensions are only connected to facts






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






18. A report created by an IT department user






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






20. Requesting more information about a particular fact






21. First stage of building a data mart






22. Look-up tables referred to by fact tables






23. A query created by a BI user






24. Third stage of building a data mart






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






27. Fifth stage of building a data mart






28. A summary record for a specific reporting period






29. Extract - Load and Transform






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






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






32. The business applications






33. Take data from a source system






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






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






36. Draws data from a data warehouse






37. An alternative term for a data warehouse






38. 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)






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






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






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






42. Second stage of building a data mart






43. Data about the data






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






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






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






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






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






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






50. A group of related fact tables