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






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






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






4. Used to support day-to-day operations






5. Draws data from a data warehouse






6. 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)






7. The business applications






8. A group of related fact tables






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






10. Fifth stage of building a data mart






11. 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






12. Draws data from operational or external systems






13. A group of conformed dimensions






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






15. Extract - Transform and Load






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






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






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






19. Online Analytical Processing






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






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






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






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






24. Data accessible to the whole data warehouse






25. Requesting information about related facts






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






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






28. Extract - Load and Transform






29. 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)






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






31. Data about the data






32. A report created by an IT department user






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






34. An alternative term for a data warehouse






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






36. The operational systems - data warehouse and data marts






37. Fourth stage of building a data mart






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






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






40. Requesting more information about a particular fact






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






42. Second stage of building a data mart






43. These extend BI into automating and optimising processes






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






45. Take data from a source system






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






47. A query created by a BI user






48. A summary record for a specific reporting period






49. A schema where dimensions are only connected to facts






50. A table containing foreign keys and values