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. A group of conformed dimensions






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






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






4. A summary record for a specific reporting period






5. Data accessible to the whole data warehouse






6. The business applications






7. Extract - Transform and Load






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






9. Fourth stage of building a data mart






10. An alternative term for a data warehouse






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






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






13. A report created by an IT department user






14. A table containing foreign keys and values






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






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






17. Fifth stage of building a data mart






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






19. Import data into a new database






20. Requesting more information about a particular fact






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






22. Draws data from a data warehouse






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






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






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






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






27. These extend BI into automating and optimising processes






28. Second stage of building a data mart






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






30. 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)






31. A group of related fact tables






32. 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)






33. Third stage of building a data mart






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






35. Dimensions which are shared by two or more facts






36. Used to support day-to-day operations






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






38. Look-up tables referred to by fact tables






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






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






41. Requesting information about related facts






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






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






44. Data about the data






45. Take data from a source system






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






47. 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






48. A schema where dimensions are only connected to facts






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






50. First stage of building a data mart