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. A daily snapshot for each day of a set period






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






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






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






6. Third stage of building a data mart






7. 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)






8. Data about the data






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






10. Look-up tables referred to by fact tables






11. Extract - Transform and Load






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






13. Take data from a source system






14. Draws data from a data warehouse






15. Online Analytical Processing






16. Draws data from operational or external systems






17. Extract - Load and Transform






18. These extend BI into automating and optimising processes






19. Import data into a new database






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






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






22. Requesting information about related facts






23. The business applications






24. An alternative term for a data warehouse






25. Data accessible to the whole data warehouse






26. Second stage of building a data mart






27. 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






28. Used to support day-to-day operations






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






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. Fourth stage of building a data mart






32. A summary record for a specific reporting period






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






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






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






36. A report created by an IT department user






37. A group of conformed dimensions






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






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






40. A group of related fact tables






41. First stage of building a data mart






42. The operational systems - data warehouse and data marts






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






44. A table containing foreign keys and values






45. Dimensions which are shared by two or more facts






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






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






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






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






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