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






2. The operational systems - data warehouse and data marts






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






4. Import data into a new database






5. These extend BI into automating and optimising processes






6. Fifth stage of building a data mart






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






8. Data about the data






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






10. 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)






11. A summary record for a specific reporting period






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






13. Fourth stage of building a data mart






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






15. A report created by an IT department user






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






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






18. First stage of building a data mart






19. 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)






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






21. Extract - Load and Transform






22. Requesting more information about a particular fact






23. Extract - Transform and Load






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






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






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






27. An alternative term for a data warehouse






28. Requesting information about related facts






29. A query created by a BI user






30. A table containing foreign keys and values






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






32. Take data from a source system






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






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






35. Second stage of building a data mart






36. A schema where dimensions are only connected to facts






37. Online Analytical Processing






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






39. The business applications






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






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






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






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






44. Draws data from a data warehouse






45. Dimensions which are shared by two or more facts






46. Look-up tables referred to by fact tables






47. 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






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






49. A synonym for Business Intelligence






50. Data accessible to the whole data warehouse