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 schema where dimensions may be connected to facts or to other dimensions






2. Draws data from operational or external systems






3. Third stage of building a data mart






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






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






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






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






8. Dimensions which are shared by two or more facts






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






10. A table containing foreign keys and values






11. An alternative term for a data warehouse






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






13. Requesting information about related facts






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






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






16. Extract - Transform and Load






17. Fifth stage of building a data mart






18. 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)






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






20. A query created by a BI user






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






22. A schema where dimensions are only connected to facts






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






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






25. The business applications






26. A synonym for Business Intelligence






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






28. A group of conformed dimensions






29. A group of related fact tables






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






31. These extend BI into automating and optimising processes






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






33. Data accessible to the whole data warehouse






34. Used to support day-to-day operations






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






36. A report created by an IT department user






37. Online Analytical Processing






38. Import data into a new database






39. Extract - Load and Transform






40. 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






41. Draws data from a data warehouse






42. A summary record for a specific reporting period






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






44. Take data from a source system






45. Second stage of building a data mart






46. 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)






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






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






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






50. Data about the data