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. Import data into a new database






2. A synonym for Business Intelligence






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






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






5. First stage of building a data mart






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






7. Draws data from a data warehouse






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






9. The operational systems - data warehouse and data marts






10. Look-up tables referred to by fact tables






11. A schema where dimensions are only connected to facts






12. 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)






13. An alternative term for a data warehouse






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






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






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






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






18. Draws data from operational or external systems






19. Data accessible to the whole data warehouse






20. Extract - Load and Transform






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






22. 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






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






24. Dimensions which are shared by two or more facts






25. Data about the data






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






27. Requesting more information about a particular fact






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






29. A summary record for a specific reporting period






30. 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)






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






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






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






34. A query created by a BI user






35. Third stage of building a data mart






36. Second stage of building a data mart






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






38. The business applications






39. Extract - Transform and Load






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






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






42. Fifth stage of building a data mart






43. These extend BI into automating and optimising processes






44. A group of related fact tables






45. A table containing foreign keys and values






46. A report created by an IT department user






47. Online Analytical Processing






48. Requesting information about related facts






49. Fourth stage of building a data mart






50. A group of conformed dimensions