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. Second stage of the data warehouse data architecture design process






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






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






5. A summary record for a specific reporting period






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






7. Third stage of building a data mart






8. Draws data from a data warehouse






9. The operational systems - data warehouse and data marts






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






11. A group of conformed dimensions






12. Import data into a new database






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






14. A schema where dimensions are only connected to facts






15. Extract - Load and Transform






16. Data about the data






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






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






19. Second stage of building a data mart






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






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






22. Data accessible to the whole data warehouse






23. These extend BI into automating and optimising processes






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






25. An alternative term for a data warehouse






26. Used to support day-to-day operations






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






28. First stage of building a data mart






29. Requesting more information about a particular fact






30. Requesting information about related facts






31. 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






32. Take data from a source system






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






34. Online Analytical Processing






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






36. Fourth stage of building a data mart






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






38. The business applications






39. A group of related fact tables






40. A report created by an IT department user






41. Fifth stage of building a data mart






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






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






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






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






46. A query created by a BI user






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






48. Look-up tables referred to by fact tables






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






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