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 query created by a BI user






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






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






4. Draws data from operational or external systems






5. Take data from a source system






6. A synonym for Business Intelligence






7. Extract - Load and Transform






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






9. These extend BI into automating and optimising processes






10. Data accessible to the whole data warehouse






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






12. Dimensions which are shared by two or more facts






13. Used to support day-to-day operations






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






15. Extract - Transform and Load






16. Look-up tables referred to by fact tables






17. First stage of building a data mart






18. Second stage of building a data mart






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






20. 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)






21. Draws data from a data warehouse






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






23. Fourth stage of building a data mart






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






25. A summary record for a specific reporting period






26. The business applications






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






28. Requesting information about related facts






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






30. 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)






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






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






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






34. A schema where dimensions are only connected to facts






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






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






37. Import data into a new database






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






39. A group of conformed dimensions






40. Online Analytical Processing






41. A report created by an IT department user






42. Third stage of building a data mart






43. 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






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






45. A group of related fact tables






46. The operational systems - data warehouse and data marts






47. Data about the data






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






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






50. Requesting more information about a particular fact