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. Second stage of the data warehouse data architecture design process






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






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






4. Second stage of building a data mart






5. An alternative term for a data warehouse






6. 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)






7. Requesting information about related facts






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






9. First stage of building a data mart






10. Used to support day-to-day operations






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






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






13. Import data into a new database






14. A schema where dimensions are only connected to facts






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






16. Data accessible to the whole data warehouse






17. A summary record for a specific reporting period






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






19. Look-up tables referred to by fact tables






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






21. A synonym for Business Intelligence






22. Draws data from a data warehouse






23. A report created by an IT department user






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






25. The business applications






26. 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






27. Extract - Transform and Load






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






29. A group of related fact tables






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






31. Fifth stage of building a data mart






32. Requesting more information about a particular fact






33. A query created by a BI user






34. Dimensions which are shared by two or more facts






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






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






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






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






39. Extract - Load and Transform






40. The operational systems - data warehouse and data marts






41. Take data from a source system






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






43. Fourth stage of building a data mart






44. Third stage of building a data mart






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






46. Online Analytical Processing






47. 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)






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






49. A table containing foreign keys and values






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