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. Extract - Transform and Load






2. Look-up tables referred to by fact tables






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






4. The business applications






5. Used to support day-to-day operations






6. Fifth stage of building a data mart






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






8. 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






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






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






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






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






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






14. Import data into a new database






15. A summary record for a specific reporting period






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






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






18. A synonym for Business Intelligence






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






20. Extract - Load and Transform






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






22. Data accessible to the whole data warehouse






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






24. Draws data from a data warehouse






25. A table containing foreign keys and values






26. Take data from a source system






27. A group of conformed dimensions






28. The operational systems - data warehouse and data marts






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






30. Online Analytical Processing






31. Requesting more information about a particular fact






32. A report created by an IT department user






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






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






35. Requesting information about related facts






36. Data about the data






37. An alternative term for a data warehouse






38. Draws data from operational or external systems






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






40. 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)






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






42. 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)






43. A schema where dimensions are only connected to facts






44. Dimensions which are shared by two or more facts






45. Third stage of building a data mart






46. A query created by a BI user






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






48. A group of related fact tables






49. These extend BI into automating and optimising processes






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