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. Data about the data






2. 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)






3. A group of conformed dimensions






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






5. First stage of building a data mart






6. Online Analytical Processing






7. Dimensions which are shared by two or more facts






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






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






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






11. Draws data from a data warehouse






12. Data accessible to the whole data warehouse






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






14. Extract - Transform and Load






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






16. Used to support day-to-day operations






17. Import data into a new database






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






19. Requesting information about related facts






20. Draws data from operational or external systems






21. Look-up tables referred to by fact tables






22. These extend BI into automating and optimising processes






23. A query created by a BI user






24. A group of related fact tables






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






26. The operational systems - data warehouse and data marts






27. A report created by an IT department user






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






29. Third stage of building a data mart






30. 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






31. Second stage of building a data mart






32. Extract - Load and Transform






33. A table containing foreign keys and values






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






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






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






37. A summary record for a specific reporting period






38. Take data from a source system






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






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






41. 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)






42. The business applications






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






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






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






46. Fifth stage of building a data mart






47. Fourth stage of building a data mart






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






49. An alternative term for a data warehouse






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