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






2. Dimensions which are shared by two or more facts






3. A schema where dimensions are only connected to facts






4. Fourth stage of building a data mart






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






6. Draws data from operational or external systems






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






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






9. Fifth stage of building a data mart






10. These extend BI into automating and optimising processes






11. Look-up tables referred to by fact tables






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






13. A query created by a BI user






14. The operational systems - data warehouse and data marts






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






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






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






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






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






20. Import data into a new database






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






22. The business applications






23. First stage of building a data mart






24. Requesting more information about a particular fact






25. 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






26. A summary record for a specific reporting period






27. Online Analytical Processing






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






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






30. Data about the data






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






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






33. A synonym for Business Intelligence






34. Second stage of building a data mart






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






36. A group of conformed dimensions






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






38. Extract - Transform and Load






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






40. Take data from a source system






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






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






43. A group of related fact tables






44. Draws data from a data warehouse






45. Third stage of building a data mart






46. An alternative term for a data warehouse






47. Data accessible to the whole data warehouse






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






49. Requesting information about related facts






50. A report created by an IT department user