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 single low-level fact representing a single business operation






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






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






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






5. Data about the data






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






7. Dimensions which are shared by two or more facts






8. These extend BI into automating and optimising processes






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






10. The operational systems - data warehouse and data marts






11. Draws data from a data warehouse






12. A group of related fact tables






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






14. The business applications






15. Second stage of building a data mart






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






17. Requesting more information about a particular fact






18. Data accessible to the whole data warehouse






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






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






21. Used to support day-to-day operations






22. 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






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






24. An alternative term for a data warehouse






25. 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)






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






27. A schema where dimensions are only connected to facts






28. Extract - Transform and Load






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






30. Take data from a source system






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






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






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






34. A report created by an IT department user






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






36. Draws data from operational or external systems






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






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






39. A group of conformed dimensions






40. Third stage of building a data mart






41. A table containing foreign keys and values






42. Look-up tables referred to by fact tables






43. Extract - Load and Transform






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






45. Fourth stage of building a data mart






46. First stage of building a data mart






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






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






49. 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)






50. A query created by a BI user