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






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






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






4. Requesting information about related facts






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






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






7. First stage of building a data mart






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






9. Requesting more information about a particular fact






10. A query created by a BI user






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






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






13. Extract - Load and Transform






14. Draws data from operational or external systems






15. An alternative term for a data warehouse






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






17. Take data from a source system






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






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






20. A report created by an IT department user






21. Third stage of building a data mart






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






23. A synonym for Business Intelligence






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






25. The business applications






26. Data about the data






27. These extend BI into automating and optimising processes






28. 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)






29. A group of conformed dimensions






30. Import data into a new database






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






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






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






34. Extract - Transform and Load






35. Look-up tables referred to by fact tables






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






37. Fifth stage of building a data mart






38. Draws data from a data warehouse






39. The operational systems - data warehouse and data marts






40. Used to support day-to-day operations






41. Data accessible to the whole data warehouse






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






43. A group of related fact tables






44. Second stage of building a data mart






45. A table containing foreign keys and values






46. A schema where dimensions are only connected to facts






47. Fourth stage of building a data mart






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






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






50. Dimensions which are shared by two or more facts