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. 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






2. Online Analytical Processing






3. Data about the data






4. Dimensions which are shared by two or more facts






5. A report created by an IT department user






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






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






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






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






10. Requesting more information about a particular fact






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






12. Import data into a new database






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






14. These extend BI into automating and optimising processes






15. A table containing foreign keys and values






16. Draws data from operational or external systems






17. The operational systems - data warehouse and data marts






18. Fifth stage of building a data mart






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






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






21. First stage of building a data mart






22. A schema where dimensions are only connected to facts






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






24. Look-up tables referred to by fact tables






25. Third stage of building a data mart






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






27. A summary record for a specific reporting period






28. The business applications






29. A query created by a BI user






30. Fourth stage of building a data mart






31. 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)






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






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






34. Extract - Transform and Load






35. Data accessible to the whole data warehouse






36. A synonym for Business Intelligence






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






38. Requesting information about related facts






39. An alternative term for a data warehouse






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






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






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






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






44. Draws data from a data warehouse






45. A group of related fact tables






46. Used to support day-to-day operations






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






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






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






50. Extract - Load and Transform