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. Tables containing summary records calculated from the main fact tables






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






3. A summary record for a specific reporting period






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






5. A table containing foreign keys and values






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






7. The operational systems - data warehouse and data marts






8. A group of related fact tables






9. Data accessible to the whole data warehouse






10. The business applications






11. Look-up tables referred to by fact tables






12. Draws data from a data warehouse






13. Third stage of building a data mart






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






15. First stage of building a data mart






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






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






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






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






20. An alternative term for a data warehouse






21. These extend BI into automating and optimising processes






22. Fourth stage of building a data mart






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






24. Data about the data






25. Dimensions which are shared by two or more facts






26. Extract - Load and Transform






27. Import data into a new database






28. A query created by a BI user






29. 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)






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






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






32. Take data from a source system






33. Online Analytical Processing






34. Draws data from operational or external systems






35. Second stage of building a data mart






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






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






38. Fifth stage of building a data mart






39. Requesting more information about a particular fact






40. A schema where dimensions are only connected to facts






41. Used to support day-to-day operations






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






43. A group of conformed dimensions






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






45. Extract - Transform and Load






46. Requesting information about related facts






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






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






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






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