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. Requesting information about related facts






2. Fifth stage of building a data mart






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






4. Used to support day-to-day operations






5. 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






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






7. Dimensions which are shared by two or more facts






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






9. A report created by an IT department user






10. A table containing foreign keys and values






11. Third stage of building a data mart






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






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






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






15. The operational systems - data warehouse and data marts






16. Extract - Transform and Load






17. Import data into a new database






18. Draws data from a data warehouse






19. Fourth stage of building a data mart






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






21. The business applications






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






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






24. Data accessible to the whole data warehouse






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






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






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






28. These extend BI into automating and optimising processes






29. Extract - Load and Transform






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






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






32. First stage of building a data mart






33. Draws data from operational or external systems






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






35. An alternative term for a data warehouse






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






37. A schema where dimensions are only connected to facts






38. 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)






39. 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)






40. A synonym for Business Intelligence






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






42. A summary record for a specific reporting period






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






44. Look-up tables referred to by fact tables






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






46. A query created by a BI user






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






48. A group of conformed dimensions






49. Data about the data






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