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. Data accessible to the whole data warehouse






2. A summary record for a specific reporting period






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






4. Online Analytical Processing






5. Dimensions which are shared by two or more facts






6. Data about the data






7. Draws data from a data warehouse






8. A query created by a BI user






9. Fifth stage of building a data mart






10. A group of conformed dimensions






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






12. A group of related fact tables






13. Fourth stage of building a data mart






14. 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






15. First stage of building a data mart






16. Look-up tables referred to by fact tables






17. A table containing foreign keys and values






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






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






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






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






22. Extract - Load and Transform






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






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






25. Requesting more information about a particular fact






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






27. The operational systems - data warehouse and data marts






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






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






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






31. An alternative term for a data warehouse






32. A schema where dimensions are only connected to facts






33. Import data into a new database






34. Used to support day-to-day operations






35. Draws data from operational or external systems






36. 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)






37. 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)






38. Requesting information about related facts






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






40. Third stage of building a data mart






41. The business applications






42. Second stage of building a data mart






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






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






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






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






47. A synonym for Business Intelligence






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






49. Take data from a source system






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