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. 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)






2. Data accessible to the whole data warehouse






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






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






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






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






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






8. Draws data from operational or external systems






9. A table containing foreign keys and values






10. Data about the data






11. Extract - Load and Transform






12. Fourth stage of building a data mart






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






14. 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






15. A report created by an IT department user






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






17. A group of conformed dimensions






18. Requesting information about related facts






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






20. These extend BI into automating and optimising processes






21. A schema where dimensions are only connected to facts






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






23. The operational systems - data warehouse and data marts






24. A synonym for Business Intelligence






25. A group of related fact tables






26. Online Analytical Processing






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






28. 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)






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






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






31. Used to support day-to-day operations






32. Dimensions which are shared by two or more facts






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






34. A summary record for a specific reporting period






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






36. Look-up tables referred to by fact tables






37. The business applications






38. Extract - Transform and Load






39. First stage of building a data mart






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






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






42. Third stage of building a data mart






43. Draws data from a data warehouse






44. An alternative term for a data warehouse






45. Second stage of building a data mart






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






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






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






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






50. Take data from a source system