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. Draws data from operational or external systems






2. Requesting more information about a particular fact






3. Take data from a source system






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






5. Third stage of building a data mart






6. First stage of building a data mart






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






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






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






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






11. 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)






12. Requesting information about related facts






13. Fifth stage of building a data mart






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






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






16. These extend BI into automating and optimising processes






17. A query created by a BI user






18. Second stage of building a data mart






19. A schema where dimensions are only connected to facts






20. A synonym for Business Intelligence






21. Import data into a new database






22. Used to support day-to-day operations






23. Data accessible to the whole data warehouse






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






25. A table containing foreign keys and values






26. Online Analytical Processing






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






28. A group of related fact tables






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






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






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






32. 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






33. Fourth stage of building a data mart






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






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






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






37. A summary record for a specific reporting period






38. Extract - Transform and Load






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






40. A group of conformed dimensions






41. Look-up tables referred to by fact tables






42. Dimensions which are shared by two or more facts






43. Data about the data






44. 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)






45. Extract - Load and Transform






46. A report created by an IT department user






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






48. An alternative term for a data warehouse






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






50. The business applications