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






2. A group of related fact tables






3. 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)






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






5. A query created by a BI user






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






7. A summary record for a specific reporting period






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






9. Online Analytical Processing






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






11. 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






12. A report created by an IT department user






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






14. An alternative term for a data warehouse






15. The operational systems - data warehouse and data marts






16. Take data from a source system






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






18. Third stage of building a data mart






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






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






21. Fourth stage of building a data mart






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






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






24. Draws data from a data warehouse






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






26. A group of conformed dimensions






27. Requesting more information about a particular fact






28. First stage of building a data mart






29. Dimensions which are shared by two or more facts






30. Draws data from operational or external systems






31. A schema where dimensions are only connected to facts






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






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






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






35. Import data into a new database






36. Data about the data






37. Fifth stage of building a data mart






38. Extract - Transform and Load






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






40. Used to support day-to-day operations






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






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






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






44. A table containing foreign keys and values






45. The business applications






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






47. A synonym for Business Intelligence






48. Extract - Load and Transform






49. Data accessible to the whole data warehouse






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