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. Data about the data






2. Third stage of building a data mart






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






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






5. Dimensions which are shared by two or more facts






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. Third stage of the data warehouse data architecture design process






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






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






10. A schema where dimensions are only connected to facts






11. Used to support day-to-day operations






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






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






14. 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)






15. An alternative term for a data warehouse






16. These extend BI into automating and optimising processes






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






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






19. Draws data from a data warehouse






20. A query created by a BI user






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






22. First stage of building a data mart






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






24. Online Analytical Processing






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






26. A synonym for Business Intelligence






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






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






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






30. Fifth stage of building a data mart






31. A group of conformed dimensions






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






33. 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)






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






35. The operational systems - data warehouse and data marts






36. Import data into a new database






37. Extract - Load and Transform






38. A table containing foreign keys and values






39. Take data from a source system






40. The business applications






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






42. Extract - Transform and Load






43. Draws data from operational or external systems






44. A summary record for a specific reporting period






45. Data accessible to the whole data warehouse






46. Fourth stage of building a data mart






47. Look-up tables referred to by fact tables






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






49. Second stage of building a data mart






50. Requesting more information about a particular fact






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