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






2. 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






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






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






5. A group of conformed dimensions






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






7. Data accessible to the whole data warehouse






8. Fifth stage of building a data mart






9. Dimensions which are shared by two or more facts






10. Online Analytical Processing






11. 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)






12. Draws data from a data warehouse






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






14. Draws data from operational or external systems






15. Extract - Transform and Load






16. Used to support day-to-day operations






17. The operational systems - data warehouse and data marts






18. Third stage of building a data mart






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






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






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






22. A schema where dimensions are only connected to facts






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






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






25. Data about the data






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






27. Requesting more information about a particular fact






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






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






30. A table containing foreign keys and values






31. Import data into a new database






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






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






34. First stage of building a data mart






35. An alternative term for a data warehouse






36. Fourth stage of building a data mart






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






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






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






40. These extend BI into automating and optimising processes






41. Requesting information about related facts






42. 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)






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






44. A query created by a BI user






45. A summary record for a specific reporting period






46. Extract - Load and Transform






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






48. A group of related fact tables






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






50. A synonym for Business Intelligence