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 report created by an IT department user






2. Import data into a new database






3. A group of related fact tables






4. Data about the data






5. An alternative term for a data warehouse






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






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






8. Draws data from a data warehouse






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






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






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






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






13. 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






14. 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)






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






16. A synonym for Business Intelligence






17. A summary record for a specific reporting period






18. Extract - Transform and Load






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






20. Dimensions which are shared by two or more facts






21. Second stage of building a data mart






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






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






24. Fourth stage of building a data mart






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






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






27. Data accessible to the whole data warehouse






28. Third stage of building a data mart






29. Fifth stage of building a data mart






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






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






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






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






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






35. Take data from a source system






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






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






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






39. Requesting more information about a particular fact






40. Requesting information about related facts






41. Online Analytical Processing






42. These extend BI into automating and optimising processes






43. Look-up tables referred to by fact tables






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






45. A schema where dimensions are only connected to facts






46. Draws data from operational or external systems






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






48. Extract - Load and Transform






49. A group of conformed dimensions






50. Used to support day-to-day operations