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 summary record for a specific reporting period






2. Take data from a source system






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






4. A group of related fact tables






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






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






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






8. Draws data from operational or external systems






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






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






11. 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)






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






13. A report created by an IT department user






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






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






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






17. Online Analytical Processing






18. The operational systems - data warehouse and data marts






19. Second stage of building a data mart






20. A query created by a BI user






21. A schema where dimensions are only connected to facts






22. First stage of building a data mart






23. Extract - Load and Transform






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






25. Requesting more information about a particular fact






26. Fifth stage of building a data mart






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






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






29. An alternative term for a data warehouse






30. Data about the data






31. Import data into a new database






32. Requesting information about related facts






33. Look-up tables referred to by fact tables






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






35. Third stage of building a data mart






36. Used to support day-to-day operations






37. Draws data from a data warehouse






38. 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)






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






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






41. Extract - Transform and Load






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






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






44. A table containing foreign keys and values






45. Fourth stage of building a data mart






46. A synonym for Business Intelligence






47. Data accessible to the whole data warehouse






48. 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






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






50. Dimensions which are shared by two or more facts






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