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. Splitting data tables into smaller tables for efficient access.






2. Requesting more information about a particular fact






3. Extract - Load and Transform






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






5. A summary record for a specific reporting period






6. 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






7. Draws data from a data warehouse






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






9. A group of related fact tables






10. Draws data from operational or external systems






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






12. Requesting information about related facts






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






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






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






16. Dimensions which are shared by two or more facts






17. Third stage of building a data mart






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






19. Extract - Transform and Load






20. Import data into a new database






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






22. Data accessible to the whole data warehouse






23. Second stage of building a data mart






24. The operational systems - data warehouse and data marts






25. These extend BI into automating and optimising processes






26. A report created by an IT department user






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






28. 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)






29. Look-up tables referred to by fact tables






30. Fourth stage of building a data mart






31. Fifth stage of building a data mart






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






33. Data about the data






34. Online Analytical Processing






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






36. First stage of building a data mart






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






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






39. An alternative term for a data warehouse






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






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






43. A group of conformed dimensions






44. A schema where dimensions are only connected to facts






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






46. A query created by a BI user






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






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






49. The business applications






50. A synonym for Business Intelligence