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. Requesting information about related facts






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






3. A schema where dimensions are only connected to facts






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






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






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






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






8. A group of conformed dimensions






9. 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)






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






11. Extract - Transform and Load






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






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






14. Draws data from operational or external systems






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






16. A report created by an IT department user






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






18. Look-up tables referred to by fact tables






19. A query created by a BI user






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






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






22. Fourth stage of building a data mart






23. A group of related fact tables






24. A summary record for a specific reporting period






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






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. First stage of building a data mart






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






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






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






31. Take data from a source system






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






33. Requesting more information about a particular fact






34. Extract - Load and Transform






35. The operational systems - data warehouse and data marts






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






37. Second stage of building a data mart






38. These extend BI into automating and optimising processes






39. Third stage of building a data mart






40. A synonym for Business Intelligence






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






42. Used to support day-to-day operations






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






44. Online Analytical Processing






45. Data about the data






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






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






48. The business applications






49. 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)






50. A table containing foreign keys and values