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. An alternative term for a data warehouse






2. These extend BI into automating and optimising processes






3. Requesting information about related facts






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






5. A group of conformed dimensions






6. Dimensions which are shared by two or more facts






7. The business applications






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






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






10. Used to support day-to-day operations






11. Data about the data






12. Extract - Transform and Load






13. Requesting more information about a particular fact






14. Draws data from operational or external systems






15. Data accessible to the whole data warehouse






16. A table containing foreign keys and values






17. A schema where dimensions are only connected to facts






18. 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)






19. A summary record for a specific reporting period






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






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






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






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






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






25. A synonym for Business Intelligence






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






27. Fourth stage of building a data mart






28. 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






29. Second stage of building a data mart






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






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






32. A group of related fact tables






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






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






35. Fifth stage of building a data mart






36. Draws data from a data warehouse






37. A report created by an IT department user






38. Third stage of building a data mart






39. Look-up tables referred to by fact tables






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






41. The operational systems - data warehouse and data marts






42. First stage of building a data mart






43. 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)






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






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






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






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






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






49. Take data from a source system






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