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. Splitting data tables into smaller tables for efficient access.






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






3. Draws data from a data warehouse






4. A report created by an IT department user






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






6. Dimensions which are shared by two or more facts






7. Draws data from operational or external systems






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






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






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






11. 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






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






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






14. Data about the data






15. Import data into a new database






16. A schema where dimensions are only connected to facts






17. Requesting information about related facts






18. A group of conformed dimensions






19. A table containing foreign keys and values






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






21. The business applications






22. 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)






23. The operational systems - data warehouse and data marts






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






25. Extract - Transform and Load






26. First stage of building a data mart






27. A query created by a BI user






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






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






30. Extract - Load and Transform






31. Data accessible to the whole data warehouse






32. Second stage of building a data mart






33. Online Analytical Processing






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






35. Fourth stage of building a data mart






36. An alternative term for a data warehouse






37. A synonym for Business Intelligence






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






39. Third stage of building a data mart






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






41. Requesting more information about a particular fact






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






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






44. Look-up tables referred to by fact tables






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






46. A summary record for a specific reporting period






47. Used to support day-to-day operations






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






49. A group of related fact tables






50. Take data from a source system