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






2. Look-up tables referred to by fact tables






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






4. 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)






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






6. The operational systems - data warehouse and data marts






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






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






9. The business applications






10. Online Analytical Processing






11. These extend BI into automating and optimising processes






12. A summary record for a specific reporting period






13. Dimensions which are shared by two or more facts






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






15. An alternative term for a data warehouse






16. Fifth stage of building a data mart






17. Fourth stage of building a data mart






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






19. A schema where dimensions are only connected to facts






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






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






22. Used to support day-to-day operations






23. Third stage of building a data mart






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






25. Draws data from operational or external systems






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






27. First stage of building a data mart






28. A query created by a BI user






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






30. Import data into a new database






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






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






33. Data accessible to the whole data warehouse






34. Take data from a source system






35. Requesting information about related facts






36. 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)






37. 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






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






39. Extract - Transform and Load






40. Requesting more information about a particular fact






41. A group of related fact tables






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






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






44. A synonym for Business Intelligence






45. A group of conformed dimensions






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






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






48. A report created by an IT department user






49. Extract - Load and Transform






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