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






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






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






5. Requesting information about related facts






6. Requesting more information about a particular fact






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






8. A synonym for Business Intelligence






9. A group of conformed dimensions






10. Look-up tables referred to by fact tables






11. Third stage of building a data mart






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






13. Draws data from operational or external systems






14. Data accessible to the whole data warehouse






15. Second stage of building a data mart






16. A query created by a BI user






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






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






19. Import data into a new database






20. The business applications






21. A schema where dimensions are only connected to facts






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






23. Dimensions which are shared by two or more facts






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






25. A report created by an IT department user






26. An alternative term for a data warehouse






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






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






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






30. Extract - Load and Transform






31. A group of related fact tables






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






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






34. Online Analytical Processing






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






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






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






38. These extend BI into automating and optimising processes






39. Data about the data






40. Take data from a source system






41. 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)






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






43. Draws data from a data warehouse






44. A table containing foreign keys and values






45. First stage of building a data mart






46. Used to support day-to-day operations






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






48. The operational systems - data warehouse and data marts






49. 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






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